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Cai Y, Wang C, Yuan H, Guo Y, Cho JH, Xing X, Jia Y. Exploring negative thermal expansion materials with bulk framework structures and their relevant scaling relationships through multi-step machine learning. MATERIALS HORIZONS 2024; 11:2914-2925. [PMID: 38567484 DOI: 10.1039/d3mh01509b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Discovering new negative thermal expansion (NTE) materials is a great challenge in experiment. Meanwhile, the machine learning (ML) method can be another approach to explore NTE materials using the existing material databases. Herein, we adopt the multi-step ML method with efficient data augmentation and cross-validation to identify around 1000 materials, including oxides, fluorides, and cyanides, with bulk framework structures as new potential NTE candidate materials from ICSD and other databases. Their corresponding coefficients of negative thermal expansion (CNTE) and temperature ranges are also well predicted. Among them, about 57 materials are predicted to have an NTE probability of 100%. Some predicted NTE materials were tested by the first-principles calculations with quasi-harmonic approximation (QHA), which indicates that the ML results are in good agreement with the first principles calculation results. Based on the comprehensive analysis of the existing and predicted NTE materials, we established three universal relationships of CNTE with an average electronegativity, porosity, and temperature range. From these, we also identified some important critical values characterizing the NTE property, which can serve as an important criterion for designing new NTE materials.
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Affiliation(s)
- Yu Cai
- Key Laboratory for Special Functional Materials of Ministry of Education, and School of Materials and Engineering, Henan University, Kaifeng 475001, China.
- Institute of Quantum Materials and Physics, Henan Academy of Sciences, Zhengzhou 450046, China
| | - Chunyan Wang
- Key Laboratory for Special Functional Materials of Ministry of Education, and School of Materials and Engineering, Henan University, Kaifeng 475001, China.
- Institute of Quantum Materials and Physics, Henan Academy of Sciences, Zhengzhou 450046, China
- School of Physics and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466001, China
| | - Huanli Yuan
- School of Physics and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466001, China
| | - Yuan Guo
- Key Laboratory for Special Functional Materials of Ministry of Education, and School of Materials and Engineering, Henan University, Kaifeng 475001, China.
- Institute of Solid States Chemistry, University of Science and Technology Beijing, Beijing 100083, China.
| | - Jun-Hyung Cho
- Department of Physics and Research Institute for Natural Science, Hanyang University, 222 Wangsimni-ro, Seongdong-Ku, Seoul 04763, Republic of Korea
| | - Xianran Xing
- Institute of Solid States Chemistry, University of Science and Technology Beijing, Beijing 100083, China.
| | - Yu Jia
- Key Laboratory for Special Functional Materials of Ministry of Education, and School of Materials and Engineering, Henan University, Kaifeng 475001, China.
- Institute of Quantum Materials and Physics, Henan Academy of Sciences, Zhengzhou 450046, China
- Joint center for Theoretical Physics, and School of Physics and Electronics, Henan University, Kaifeng 475001, China
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Jahanbazi F, Mao Y. Negative Thermal Expansion Materials as Anti-Thermal-Quenching Phosphor Matrixes: Status, Opportunities, and Challenges. Inorg Chem 2024; 63:8989-9001. [PMID: 38710110 DOI: 10.1021/acs.inorgchem.4c00329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Inorganic phosphor materials often face the common phenomenon of luminescence thermal quenching (TQ), which deteriorates their device performance and consequently limits their applicability for broad applications. Thus, exploring thermally stable and even anti-TQ phosphors is viable to meet the urgent requirements of lighting technology and many other luminescence-based applications. One of the emerging approaches devoted to solving the TQ issue of phosphors, especially at elevated temperatures, is to employ negative thermal expansion (NTE) properties occurring in some unique inorganic materials. The present Review focuses on the progress of exploring NTE-based inorganic phosphor materials that have demonstrated unusual negative TQ with enhancing upconversion and downshift luminescence upon elevating temperature. We have also provided a brief history of exploring NTE phosphors for thermally stable and enhanced emission along with the investigation methods and proposed mechanisms of these unusual phenomena. To summarize, we have further discussed some opportunities and challenges that NTE materials face as host matrixes for anti-TQ phosphors. Overall, the aim of this Review is to stimulate the exploration of new NTE-based inorganic phosphors, the correlation of their fundamental structural changes with varying temperature, and the investigation of their potential for broad applications.
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Affiliation(s)
- Forough Jahanbazi
- Department of Chemistry, Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois 60616, United States
| | - Yuanbing Mao
- Department of Chemistry, Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois 60616, United States
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Zeng G, Wang C, Yuan H, Zhen X, Gao Q, Guo J, Chao M, Liu X, Liang E. The formation energy, phase transition, and negative thermal expansion of Fe 2-xSc xW 3O 12. Phys Chem Chem Phys 2023; 26:365-372. [PMID: 38073482 DOI: 10.1039/d3cp04816k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Tungstates with a molecular formula A2W3O12 exhibits a wider negative thermal expansion (NTE) temperature range than molybdates but are challenging to synthesize, especially when A = Fe or Cr with metastable structures. To enhance the structural stability of Fe2W3O12, Sc with lower electronegativity is adopted to substitute Fe according to Fe2-xScxW3O12, considering the thermodynamic stability of Sc2W3O12. It is shown that the solid solutions can be easily synthesized and the phase transition temperature (PTT) can be tuned to well below room temperature (RT). Theoretical calculations and experimental results show that the formation energy decreases and the W-O bond in Fe-O-W gradually strengthens as the substitution of Sc in Fe2-xScxW3O12 increases, indicating an increase in structural stability. NTE is enhanced after phase transition with an increase in the Sc content. The reduction in PTT and the enhancement in NTE properties of Fe2W3O12 could result in a decrease in the effective electronegativity of the Fe-site elements, resulting in a low formation energy and strengthened W-O bond in Fe-O-W, which corresponds to a more stable structure.
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Affiliation(s)
- Gaojie Zeng
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
| | - Chunyan Wang
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
- Henan Key Laboratory of Photovoltaic Materials and School of Future Technology (Quantum Information), Henan University, Kaifeng 475004, China.
- School of Physics and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466001, China
| | - Huanli Yuan
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
- School of Physics and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466001, China
| | - Xi Zhen
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
| | - Qilong Gao
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
| | - Juan Guo
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
| | - Mingju Chao
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
| | - Xiansheng Liu
- Henan Key Laboratory of Photovoltaic Materials and School of Future Technology (Quantum Information), Henan University, Kaifeng 475004, China.
| | - Erjun Liang
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
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Zhang Z, Dai X, Li L, Zhou S, Xue W, Liu Y, Liu H. Current Status of Research on the Modification of Thermal Properties of Epoxy Resin-Based Syntactic Foam Insulation Materials. Polymers (Basel) 2021; 13:3185. [PMID: 34578086 PMCID: PMC8469402 DOI: 10.3390/polym13183185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/30/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022] Open
Abstract
As a lightweight and highly insulating composite material, epoxy resin syntactic foam is increasingly widely used for insulation filling in electrical equipment. To avoid core burning and cracking, which are prone to occur during the casting process, the epoxy resin-based syntactic foam insulation materials with high thermal conductivity and low coefficient of thermal expansion are required for composite insulation equipment. The review is divided into three sections concentrating on the two main aspects of modifying the thermal properties of syntactic foam. The mechanism and models, from the aspects of thermal conductivity and coefficient of thermal expansion, are presented in the first part. The second part aims to better understand the methods for modifying the thermal properties of syntactic foam by adding functional fillers, including the addition of thermally conductive particles, hollow glass microspheres, negative thermal expansion filler and fibers, etc. The third part concludes by describing the existing challenges in this research field and expanding the applicable areas of epoxy resin-based syntactic foam insulation materials, especially cross-arm composite insulation.
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Affiliation(s)
- Zhongyuan Zhang
- Hebei Key Laboratory of Distributed Energy Storage and Micro-Grid, North China Electric Power University, Baoding 071003, China; (Z.Z.); (X.D.); (Y.L.); (H.L.)
| | - Xiaohan Dai
- Hebei Key Laboratory of Distributed Energy Storage and Micro-Grid, North China Electric Power University, Baoding 071003, China; (Z.Z.); (X.D.); (Y.L.); (H.L.)
| | - Le Li
- Hebei Key Laboratory of Distributed Energy Storage and Micro-Grid, North China Electric Power University, Baoding 071003, China; (Z.Z.); (X.D.); (Y.L.); (H.L.)
| | - Songsong Zhou
- China Electric Power Research Institute, Beijing 100192, China;
| | - Wei Xue
- State Network Zhejiang Electric Power Co., Ltd. Integrated Services Branch, Hangzhou 310000, China;
| | - Yunpeng Liu
- Hebei Key Laboratory of Distributed Energy Storage and Micro-Grid, North China Electric Power University, Baoding 071003, China; (Z.Z.); (X.D.); (Y.L.); (H.L.)
| | - Hechen Liu
- Hebei Key Laboratory of Distributed Energy Storage and Micro-Grid, North China Electric Power University, Baoding 071003, China; (Z.Z.); (X.D.); (Y.L.); (H.L.)
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Yuan H, Wang C, Gao Q, Zeng G, Guo J, Chao M, Kawaguchi S, Jia Y, Liang E. A linear scaling law for predicting phase transition temperature via averaged effective electronegativity derived from A 2M 3O 12-based compounds. MATERIALS HORIZONS 2021; 8:2562-2568. [PMID: 34874048 DOI: 10.1039/d1mh00812a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The chemical flexibility of A2M3O12-based compounds enables the design of materials with versatile functionalities such as ferroelastic switching, ion conduction and negative thermal expansion (NTE) above the ferroelastic transition temperature (Tt), which is promising for a variety of applications. Quantitative prediction of Tt is essential but lacking. Herein we propose a concept of averaged effective electronegativity (AEE) and establish a linear relationship between the Tt and AEE for A2M3O12-based compounds. The linear scaling law is validated using first principles calculations of the effective charge on oxygen and its effectiveness is verified experimentally by designing high entropy compounds Scx1Zrx2Hfx3Fex4Moy1Vy2O12 and a NTE compound Zr2MoVPO12 with expected Tt. Generalization of the linear scaling law to other NTE oxides with displacive phase transition is also demonstrated. The findings can be used as a simple and effective approach to guide the design of novel compounds with desired properties and Tt.
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Affiliation(s)
- Huanli Yuan
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
- School of Physics and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466001, China
| | - Chunyan Wang
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
- Key Laboratory for Special Functional Materials of Ministry of Education, and School of Materials and Engineering, Henan University, Kaifeng 475001, China
| | - Qilong Gao
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
| | - Gaojie Zeng
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
| | - Juan Guo
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
| | - Mingju Chao
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 6795198, Japan
| | - Yu Jia
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
- Key Laboratory for Special Functional Materials of Ministry of Education, and School of Materials and Engineering, Henan University, Kaifeng 475001, China
| | - Erjun Liang
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
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6
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Zeng G, Yuan H, Guo J, Sun Q, Gao Q, Chao M, Ren X, Liang E. Hydrate formation and its effects on the thermal expansion properties of HfMgW 3O 12. Phys Chem Chem Phys 2020; 22:12605-12612. [PMID: 32458894 DOI: 10.1039/d0cp01446j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
HfMgW3O12 is a representative material with negative thermal expansion in the ABM3O12 (A = Zr, Hf; B = Mg, Mn, Zn, M = W, Mo) family. Herein we report a novel feature of hydration in HfMgW3O12 and its effect on the thermal expansion and its structures which have not been determined previously. It is found that hydrate formation in HfMgW3O12 occurs under ambient or moisture conditions and restrain the low energy librational and translational and even high energy bending and stretching motions of the polyhedra. The coefficient of thermal expansion could be tailored from negative to zero and positive depending on the hydration levels. The unhydrated HfMgW3O12 adopts an orthorhombic structure with space group Pna21 (33) without phase transition at least from 80 K to 573 K, but pressure-induced structure transition and amorphization are found to occur at about 0.19 Gpa and above 3.93 GPa, respectively.
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Affiliation(s)
- Gaojie Zeng
- School of Physics & Microelectronics, and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
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7
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Yuan H, Wang C, Gao Q, Ge X, Sun H, Lapidus SH, Guo J, Chao M, Jia Y, Liang E. Structure and Negative Thermal Expansion in Zr 0.3Sc 1.7Mo 2.7V 0.3O 12. Inorg Chem 2020; 59:4090-4095. [PMID: 32129614 DOI: 10.1021/acs.inorgchem.0c00126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A2M3O12-based materials have received considerable attention owing to their wide range of negative thermal expansion (NTE) and chemical flexibility toward novel materials design. However, the structure and NTE mechanism remain challenging. Here, Zr4+ and V5+ are used as a unit to compensatorily replace Sc3+ and Mo6+ in Sc2Mo3O12 to tune its thermal expansion. Its crystal structure, phase transition, NTE property, and corresponding mechanisms are studied by high-resolution synchrotron X-ray diffraction, powder X-ray diffraction, ultralow-frequency Raman spectroscopy, and density functional theory calculations. The results show that Zr0.3Sc1.7Mo2.7V0.3O12 adopts an orthorhombic (Pbcn) structure at room temperature, with V atoms occupying the position of Mo1 atoms and Zr atoms occupying the position of Sc atoms, and transforms to monoclinic (P21/a) structure at ∼133 K (45 K lower than that of Sc2Mo3O12). It exhibits excellent NTE in a broader range. Most of the phonon modes below 350 cm-1 have negative Grüneisen parameters, of which the lowest and next-lowest frequency (38.5 and 45.8 cm-1) optical phonon modes arising from the translational vibrations of the Sc/Zr and Mo/V atoms in the plane of the nonlinear linkage Sc/Zr-O-Mo/V have the largest and next-largest negative Grüneisen parameters and positive total anharmonicity, and contribute most to the NTE.
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Affiliation(s)
- Huanli Yuan
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.,School of Physics and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466001, China
| | - Chunyan Wang
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Qilong Gao
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Xianghong Ge
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Hao Sun
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Saul H Lapidus
- X-ray Science Division, Argonne National Laboratory, Lemont 60439, Illinois, United States
| | - Juan Guo
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Mingju Chao
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Yu Jia
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.,Key Laboratory of Special Functional Materials of Ministry of Education of China, and School of Materials Science and Engineering, Henan University, Henan 475004, China
| | - ErJun Liang
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
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Substitutions of Zr 4+/V 5+ for Y 3+/Mo 6+ in Y 2Mo 3O 12 for Less Hygroscopicity and Low Thermal Expansion Properties. MATERIALS 2019; 12:ma12233945. [PMID: 31795182 PMCID: PMC6926913 DOI: 10.3390/ma12233945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/22/2019] [Accepted: 11/24/2019] [Indexed: 11/16/2022]
Abstract
In this investigation, ZrxY2-xVxMo3-xO12 (0 ≤ x ≤ 1.4) is developed and the effects of the substitutions of Zr4+/V5+ for Y3+/Mo6+ in Y2Mo3O12 on the hygroscopicity and thermal expansion property are investigated. For the smaller substitution content (x ≤ 0.5), their crystal structures remain orthorhombic, while there is crystal water still in the lattice. The linear coefficients of thermal expansions (CTEs), for x = 0.1, 0.3, 0.5, and 0.7, are about -4.30 × 10-6, -0.97 × 10-6, 0.85 × 10-6, and 0.77 × 10-6 K-1, respectively, from 476 to 773 K, which means that the linear CTE could be changed linearly with the substitution content of Zr4+/V5+ for Y3+/Mo6+ in Y2Mo3O12. As long as the substitution content reaches x = 1.3/1.4, almost no hygroscopicity and low thermal expansion from room temperature are obtained and are discussed in relation to the crystal structure and microstructure.
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Chen D, Zhang Y, Ge X, Cheng Y, Liu Y, Yuan H, Guo J, Chao M, Liang E. Structural, vibrational and thermal expansion properties of Sc 2W 4O 15. Phys Chem Chem Phys 2018; 20:20160-20166. [PMID: 30027948 DOI: 10.1039/c8cp02403k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel oxide material with the formula of Sc2W4O15 and orthorhombic symmetry is synthesized by solid state reactions and its structure, composition, vibrational properties and thermal expansion are investigated and identified by temperature-dependent X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray photoelectron spectrometry (XPS) and dilatometry. It is shown that the oxide material with an orthorhombic symmetry shows a similar structure to that of Sc2W3O12, but with W partially occupying the position of Sc, leading to not only the corner-sharing ScO6-WO4 connections but also the corner-sharing WO6-WO4 connections. Raman spectroscopic studies show that compared to Sc2W3O12, the FWHMs of most Raman modes in Sc2W4O15 increase due to the occupation of W6+ in the Sc3+ position. Besides, the W-O bonds in Sc2W4O15 are slightly harder than those in Sc2W3O12. An intrinsic thermal contraction in a wide range of temperatures (93-572 K) is demonstrated, which is attributed to the librational and translational vibrations of the corner-sharing polyhedra as well as the transverse vibrations of the bridging O atoms in the Sc-O-W and W-O-W linkages.
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Affiliation(s)
- Dongxia Chen
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education of China, Zhengzhou University, Zhengzhou 450052, China.
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Li S, Ge X, Yuan H, Chen D, Guo J, Shen R, Chao M, Liang E. Near-Zero Thermal Expansion and Phase Transitions in HfMg 1-x Zn x Mo 3O 12. Front Chem 2018; 6:115. [PMID: 29719819 PMCID: PMC5913344 DOI: 10.3389/fchem.2018.00115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/29/2018] [Indexed: 11/13/2022] Open
Abstract
The effects of Zn2+ incorporation on the phase formation, thermal expansion, phase transition, and vibrational properties of HfMg1-x Zn x Mo3O12 are investigated by XRD, dilatometry, and Raman spectroscopy. The results show that (i) single phase formation is only possible for x ≤ 0.5, otherwise, additional phases of HfMo2O8 and ZnMoO4 appear; (ii) The phase transition temperature from monoclinic to orthorhombic structure of the single phase HfMg1-x Zn x Mo3O12 can be well-tailored, which increases with the content of Zn2+; (iii) The incorporation of Zn2+ leads to an pronounced reduction in the positive expansion of the b-axis and an enhanced negative thermal expansion (NTE) in the c-axes, leading to a near-zero thermal expansion (ZTE) property with lower anisotropy over a wide temperature range; (iv) Replacement of Mg2+ by Zn2+ weakens the Mo-O bonds as revealed by obvious red shifts of all the Mo-O stretching modes with increasing the content of Zn2+ and improves the sintering performance of the samples which is observed by SEM. The mechanisms of the negative and near-ZTE are discussed.
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Affiliation(s)
- Sailei Li
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China
| | - Xianghong Ge
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China.,College of Science, Zhongyuan University of Technology, Zhengzhou, China
| | - Huanli Yuan
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China.,Department of Physics and Electronic Engineering, Zhoukou Normal University, Zhoukou, China
| | - Dongxia Chen
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China
| | - Juan Guo
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China
| | - Ruofan Shen
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China
| | - Mingju Chao
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China
| | - Erjun Liang
- School of Physical Science & Engineering and Key Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou, China
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Guo X, Tong P, Lin J, Yang C, Zhang K, Lin S, Song W, Sun Y. Effects of Cr Substitution on Negative Thermal Expansion and Magnetic Properties of Antiperovskite Ga 1-x Cr x N 0.83Mn 3 Compounds. Front Chem 2018; 6:75. [PMID: 29619367 PMCID: PMC5871658 DOI: 10.3389/fchem.2018.00075] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 03/06/2018] [Indexed: 12/05/2022] Open
Abstract
Negative thermal expansion (NTE) and magnetic properties were investigated for antiperovskite Ga1−xCrxN0.83Mn3 compounds. As x increases, the temperature span (ΔT) of NTE related with Γ5g antiferromagnetic (AFM) order is expanded and shifted to lower temperatures. At x = 0.1, NTE happens between 256 and 318 K (ΔT = 62 K) with an average linear coefficient of thermal expansion, αL = −46 ppm/K. The ΔT is expanded to 81 K (151–232 K) in x = 0.2 with αL = −22.6 ppm/K. Finally, NTE is no longer visible for x ≥ 0.3. Ferromagnetic order is introduced by Cr doping and continuously strengthened with increasing x, which may impede the AFM ordering and thus account for the broadening of NTE temperature window. Moreover, our specific heat measurement suggests the electronic density of states at the Fermi level is enhanced upon Cr doping, which favors the FM order rather than the AFM one.
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Affiliation(s)
- Xinge Guo
- School of Science, Hebei University of Science and Technology, Shijiazhuang, China.,Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Peng Tong
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Jianchao Lin
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Cheng Yang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Kui Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Shuai Lin
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Wenhai Song
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Yuping Sun
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China.,High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
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Zhang M, Mao Y, Guo J, Zhou W, Chao M, Zhang N, Yang M, Kong X, Kong X, Liang E. A novel negative thermal expansion material of Zr0.70V1.33Mo0.67O6.73. RSC Adv 2017. [DOI: 10.1039/c6ra26923k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel negative thermal expansion (NTE) material of Zr0.70V1.33Mo0.67O6.73 was synthesized.
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13
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Xu H, Liu R, Xu B, Li X, Ouyang C, Zhong S. Preparation and temperature-dependent photoluminescence properties of ScF 3:Eu 3+ submicroparticles. NEW J CHEM 2017. [DOI: 10.1039/c7nj00848a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Negative thermal expansion Eu3+-doped ScF3 submicroparticles were prepared via a facile solvothermal method and their temperature-dependent luminescence properties were investigated.
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Affiliation(s)
- Hualan Xu
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Ran Liu
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Bo Xu
- Department of Physics
- Laboratory of Computational Materials Physics
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Xinwei Li
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Chuying Ouyang
- Department of Physics
- Laboratory of Computational Materials Physics
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Shengliang Zhong
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
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14
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15
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Cao W, Li Q, Lin K, Liu Z, Deng J, Chen J, Xing X. Phase transition and negative thermal expansion in orthorhombic Dy2W3O12. RSC Adv 2016. [DOI: 10.1039/c6ra21136d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Orthorhombic Dy2W3O12 shows NTE (−2.6 × 10−5 °C−1) in the temperature range of 150–500 °C. So far, this value is the largest coefficient of negative thermal expansion in the A2W3O12 family (A = rare earth element).
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Affiliation(s)
- Weigang Cao
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Qiang Li
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Kun Lin
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Zhanning Liu
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Jinxia Deng
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Jun Chen
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Xianran Xing
- Department of Physical Chemistry
- University of Science and Technology Beijing
- Beijing 100083
- China
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