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Taniguchi H, Watanabe T, Kuwano T, Nakano A, Sato Y, Hagiwara M, Yokota H, Deguchi K. Unconventional Polarization Response in Titanite-Type Oxides due to Hashed Antiferroelectric Domains. ACS NANO 2024; 18:14523-14531. [PMID: 38770881 DOI: 10.1021/acsnano.4c02168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Domains in a crystal, which have crystallographic uniformity and are geometrically segmented, typically arise from various phase transitions. The physical properties within individual domains are inherently the same as those in the homogeneous bulk. As a result, sufficiently large domains have little influence on the bulk properties. However, as the domains decrease in size to the nanoscale, for instance, due to multiple phase instabilities or spatial inhomogeneities, then the materials often acquire exceptional functionalities that are unattainable without these domains. This effect is exemplified by the ultrahigh dielectric and piezoelectric responses observed in ferroelectric oxides with nanoscale polar domains as well as in ferroelectric relaxors with polar nanoclusters. Here, we demonstrate that hashed nanoscale domains in an antiferroelectric material are also capable of boosting dielectric permittivity in an unconventional way. This discovery has been made in an antiferroelectric titanite-type oxide, CaTi(Si1-xGex)O5, in which the permittivity significantly increases when the antiferroelectric order becomes short-range. Our transmission electron microscopy observations have clarified that polar regions simultaneously appear around antiphase boundaries in the antiferroelectric phase of CaTi(Si1-xGex)O5. As the concentration of the antiphase boundary increases, the polar regions become denser and play a crucial role in boosting the permittivity. At the composition of x = 0.5, the value of the permittivity finally reaches double that in the bulk and shows excellent linearity, at least until an electric field of 500 kV/cm is applied. The present findings highlight the promise of domain engineering for boosting the permittivity in antiferroelectrics as a way to develop materials with excellent dielectric properties.
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Affiliation(s)
- Hiroki Taniguchi
- Department of Physics, Nagoya University, Nagoya 464-8602, Japan
| | - Takumi Watanabe
- Department of Physics, Nagoya University, Nagoya 464-8602, Japan
| | - Taro Kuwano
- Department of Physics, Nagoya University, Nagoya 464-8602, Japan
| | - Akitoshi Nakano
- Department of Physics, Nagoya University, Nagoya 464-8602, Japan
| | - Yukio Sato
- Research and Education Institute for Semiconductors and Informatics, Kumamoto University, Kumamoto 860-8555, Japan
| | - Manabu Hagiwara
- Department of Applied Chemistry, Keio University, Yokohama 223-8522, Japan
| | - Hiroko Yokota
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama 226-8502, Japan
| | - Kazuhiko Deguchi
- Department of Physics, Nagoya University, Nagoya 464-8602, Japan
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Zeng X, Lin J, Chen Y, Wang S, Zhou P, Yu F, Wu X, Gao M, Zhao C, Lin T, Luo L, Lin C. Superior Energy Storage Capability and Fluorescence Negative Thermal Expansion of NaNbO 3-Based Transparent Ceramics by Synergistic Optimization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309992. [PMID: 38169093 DOI: 10.1002/smll.202309992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/21/2023] [Indexed: 01/05/2024]
Abstract
Transparent dielectric ceramics are splendid candidates for transparent pulse capacitors (TPCs) due to splendid cycle stability and large power density. However, the performance and service life of TPCs at present are threatened by overheating damage caused by dielectric loss. Here, a cooperative optimization strategy of microstructure control and superparaelectric regional regulation is proposed to simultaneously achieve excellent energy storage performance and real-time temperature monitoring function in NaNbO3-based ceramics. By introducing aliovalent ions and oxides with large bandgap energy, the size of polar nanoregions is continuously reduced. Due to the combined effect of increased relaxor behavior and fine grains, excellent comprehensive performances are obtained through doping appropriate amounts of Bi, Yb, Tm, and Zr, Ta, Hf in A- and B-sites of the NaNbO3 matrix, including recoverable energy storage density (5.39 J cm-3), extremely high energy storage efficiency (91.97%), ultra-fast discharge time (29 ns), and superior optical transmittance (≈47.5% at 736 nm). Additionally, the phenomenon of abnormal fluorescent negative thermal expansion is realized due to activation mechanism of surface phonon at high temperatures that can promote the formation of [Yb···O]-Tm3+ pairs, showing great potential in real-time temperature monitoring of TPCs. This research provides ideas for developing electronic devices with multiple functionalities.
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Affiliation(s)
- Xiangfu Zeng
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Jinfeng Lin
- Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Yan Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Simin Wang
- Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Ping Zhou
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Fangyuan Yu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Xiao Wu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Min Gao
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Chunlin Zhao
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Tengfei Lin
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Laihui Luo
- Department of Microelectronic Science and Engineering, Ningbo University, Ningbo, 315211, China
| | - Cong Lin
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
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Xia J, Berbille A, Luo X, Li J, Wang Z, Zhu L, Wang ZL. Reversal in Output Current Direction of 4H-SiC/Cu Tribovoltaic Nanogenerator as Controlled by Relative Humidity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305303. [PMID: 37658494 DOI: 10.1002/smll.202305303] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/03/2023] [Indexed: 09/03/2023]
Abstract
Tribovoltaic nanogenerators (TVNG) represent a fantastic opportunity for developing low-frequency energy harvesting and self-powered sensing, by exploiting their real-time direct-current (DC) output. Here, a thorough study of the effect of relative humidity (RH) on a TVNG consisting of 4H-SiC (n-type) and metallic copper foil (SM-TVNG) is presented. The SM-TVNG shows a remarkable sensitivity to RH and an abnormal RH dependence. When RH increases from ambient humidity up to 80%, an increasing electrical output is observed. However, when RH rises from 80% to 98%, the signal output not only decreases, but its direction reverses as it crosses 90% RH. This behavior differs greatly from that of a Si-based TVNG, whose output constantly increases with RH. The behavior of the SM-TVNG might result from the competition between the built-in electric field induced by metal-semiconductor contact and a strong triboelectric electric field induced by solid-liquid triboelectrification under high RH. The authors also demonstrated that both SM-TVNG and Si-based TVNG can work effectively as-is even fully submerged in deionized water. This mechanism can affect other devices and be applied to design self-powered sensors working under high RH or underwater.
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Affiliation(s)
- Jinchao Xia
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China
| | - Andy Berbille
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiongxin Luo
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China
| | - Jiayu Li
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China
| | - Ziming Wang
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China
| | - Laipan Zhu
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhong Lin Wang
- CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
- Yonsei Frontier Lab, Yonsei University, Seoul, 03722, Republic of Korea
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Ding H, Hadaeghi N, Zhang MH, Jiang TS, Zintler A, Carstensen L, Zhang YX, Kleebe HJ, Zhang HB, Molina-Luna L. Translational Antiphase Boundaries in NaNbO 3 Antiferroelectrics. ACS APPLIED MATERIALS & INTERFACES 2023; 15:59964-59972. [PMID: 38085261 DOI: 10.1021/acsami.3c15141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Planar defects are known to be of importance in affecting the functional properties of materials. Translational antiphase boundaries (APBs) in particular have attracted considerable attention in perovskite oxides, but little is known in lead-free antiferroelectric oxides that are promising candidates for energy storage applications. Here, we present a study of translational APBs in prototypical antiferroelectric NaNbO3 using aberration-corrected (scanning) transmission electron microscopy (TEM) techniques at different length scales. The translational APBs in NaNbO3 are characterized by a 2-fold-modulated structure, which is antipolar in nature and exhibits a high density, different from the polar nature and lower density in PbZrO3. The high stability of translational APBs against external electric fields and elevated temperatures was revealed using ex situ and in situ TEM experiments and is expected to be associated with their antipolar nature. Density functional theory calculations demonstrate that translational APBs possess only slightly higher free energy than the antiferroelectric and ferroelectric phase energies with differences of 29 and 33 meV/f.u., respectively, justifying their coexistence down to the nanoscale at room temperature. These results provide a detailed atomistic elucidation of translational APBs in NaNbO3 with antipolar character and stability against external stimuli, establishing the basis of defect engineering of antiferroelectrics for energy storage devices.
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Affiliation(s)
- Hui Ding
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Niloofar Hadaeghi
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Mao-Hua Zhang
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Tian-Shu Jiang
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Alexander Zintler
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Leif Carstensen
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Yi-Xuan Zhang
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Hans-Joachim Kleebe
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Hong-Bin Zhang
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
| | - Leopoldo Molina-Luna
- Department of Materials and Earth Sciences, Technical University of Darmstadt, Darmstadt 64289, Germany
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Pattipaka S, Choi H, Lim Y, Park KI, Chung K, Hwang GT. Enhanced Energy Storage Performance and Efficiency in Bi 0.5(Na 0.8K 0.2) 0.5TiO 3-Bi 0.2Sr 0.7TiO 3 Relaxor Ferroelectric Ceramics via Domain Engineering. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4912. [PMID: 37512187 PMCID: PMC10381779 DOI: 10.3390/ma16144912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/01/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023]
Abstract
Dielectric materials are highly desired for pulsed power capacitors due to their ultra-fast charge-discharge rate and excellent fatigue behavior. Nevertheless, the low energy storage density caused by the low breakdown strength has been the main challenge for practical applications. Herein, we report the electric energy storage properties of (1 - x) Bi0.5(Na0.8K0.2)0.5TiO3-xBi0.2Sr0.7TiO3 (BNKT-BST; x = 0.15-0.50) relaxor ferroelectric ceramics that are enhanced via a domain engineering method. A rhombohedral-tetragonal phase, the formation of highly dynamic PNRs, and a dense microstructure are confirmed from XRD, Raman vibrational spectra, and microscopic investigations. The relative dielectric permittivity (2664 at 1 kHz) and loss factor (0.058) were gradually improved with BST (x = 0.45). The incorporation of BST into BNKT can disturb the long-range ferroelectric order, lowering the dielectric maximum temperature Tm and inducing the formation of highly dynamic polar nano-regions. In addition, the Tm shifts toward a high temperature with frequency and a diffuse phase transition, indicating relaxor ferroelectric characteristics of BNKT-BST ceramics, which is confirmed by the modified Curie-Weiss law. The rhombohedral-tetragonal phase, fine grain size, and lowered Tm with relaxor properties synergistically contribute to a high Pmax and low Pr, improving the breakdown strength with BST and resulting in a high recoverable energy density Wrec of 0.81 J/cm3 and a high energy efficiency η of 86.95% at 90 kV/cm for x = 0.45.
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Affiliation(s)
- Srinivas Pattipaka
- Department of Materials Science and Engineering, Pukyong National University, 45 Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea
| | - Hyunsu Choi
- Department of Materials Science and Engineering, Pukyong National University, 45 Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea
| | - Yeseul Lim
- Department of Materials Science and Engineering, Pukyong National University, 45 Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea
| | - Kwi-Il Park
- School of Materials Science and Engineering, Kyungpook National University, 80 Daehak-ro, Buk-Gu, Daegu 41566, Republic of Korea
| | - Kyeongwoon Chung
- Department of Biofibers and Biomaterials Science, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Geon-Tae Hwang
- Department of Materials Science and Engineering, Pukyong National University, 45 Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea
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