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Zhang HP, Wang FR, Li MZ. Contrasting Bonding-Interaction-Induced Distinct Relaxation in La 65Ni 35 and La 65Al 35 Glass-Forming Alloys. J Phys Chem B 2019; 123:1149-1155. [PMID: 30624933 DOI: 10.1021/acs.jpcb.8b09188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The α and β relaxations are two fundamental processes in glass-forming materials, and quite important for many of the properties. Although intensive studies have found that α and β relaxations can be tuned by changing the constituent elements, the underlying structural basis is still elusive. Here, we explored the effect of two key elements of Al and Ni on distinct β and α relaxations in La65Al35 and La65Ni35 glass-forming alloys via classical and ab initio molecular dynamics simulations combined with dynamical mechanical spectroscopy. Unexpected coupling of relaxation in both β and α relaxation time scales is observed for La and Al atoms in the La65Al35 system, which drastically suppresses the relaxation dynamics. It is revealed that the dynamic coupling of La and Al results from the covalent-like bonding interaction between Al atoms, which connect Al together, forming a network-like structure. The bonding network not only drastically slows down the dynamics of Al but also couples the motion of La and Al together. This finding elucidates the underlying basis of Al and Ni elements for distinct β and α relaxation and sheds light on tuning the formation and properties of metallic glasses by minor alloying.
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Affiliation(s)
- H P Zhang
- Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials & Micro-Nano Devices , Renmin University of China , Beijing 100872 , China
| | - F R Wang
- Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials & Micro-Nano Devices , Renmin University of China , Beijing 100872 , China
| | - M Z Li
- Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials & Micro-Nano Devices , Renmin University of China , Beijing 100872 , China
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Xu W, Sandor MT, Yu Y, Ke HB, Zhang HP, Li MZ, Wang WH, Liu L, Wu Y. Evidence of liquid-liquid transition in glass-forming La50Al35Ni15 melt above liquidus temperature. Nat Commun 2015; 6:7696. [PMID: 26165855 PMCID: PMC4510689 DOI: 10.1038/ncomms8696] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Accepted: 06/03/2015] [Indexed: 11/20/2022] Open
Abstract
Liquid-liquid transition, a phase transition of one liquid phase to another with the same composition, provides a key opportunity for investigating the relationship between liquid structures and dynamics. Here we report experimental evidences of a liquid-liquid transition in glass-forming La50Al35Ni15 melt above its liquidus temperature by (27)Al nuclear magnetic resonance including the temperature dependence of cage volume fluctuations and atomic diffusion. The observed dependence of the incubation time on the degree of undercooling is consistent with a first-order phase transition. Simulation results indicate that such transition is accompanied by the change of bond-orientational order without noticeable change in density. The temperature dependence of atomic diffusion revealed by simulations is also in agreement with experiments. These observations indicate the need of two-order parameters in describing phase transitions of liquids.
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Affiliation(s)
- Wei Xu
- School of Materials Science and Engineering, and State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, 430074 Wuhan, China
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Magdalena T. Sandor
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599-3255, USA
| | - Yao Yu
- School of Materials Science and Engineering, and State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, 430074 Wuhan, China
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Hai-Bo Ke
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Hua-Ping Zhang
- Department of Physics, Renmin University of China, Beijing 100872, China
| | - Mao-Zhi Li
- Department of Physics, Renmin University of China, Beijing 100872, China
| | - Wei-Hua Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Lin Liu
- School of Materials Science and Engineering, and State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Yue Wu
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599-3255, USA
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Takeuchi Y. Top pair production distributions at the Tevatron. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20134917002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Xi XK, Li LL, Zhang B, Wang WH, Wu Y. Correlation of atomic cluster symmetry and glass-forming ability of metallic glass. PHYSICAL REVIEW LETTERS 2007; 99:095501. [PMID: 17931017 DOI: 10.1103/physrevlett.99.095501] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2007] [Indexed: 05/25/2023]
Abstract
Local structures play a crucial role in glass formation and properties. In addition to topological short-range order, the geometric property of site symmetry is another important but less known characteristic of local structures. It is shown that the observed sharp increase of glass forming ability of Ce70-xAl10Cu20Cox upon Co addition is correlated with a dramatic increase of Al site symmetry, as reflected by decreasing quadrupole frequency measured by 27Al NMR. The result is consistent with the structure model of Al-centered icosahedral clusters as the predominant structural building blocks.
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Affiliation(s)
- Xue Kui Xi
- Department of Physics and Astronomy and Curriculum in Applied and Materials Sciences, University of North Carolina, Chapel Hill, North Carolina 27599-3255, USA
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Shastri A, Baker DB, Conradi MS, Borsa F, Torgeson DR. NMR pressure study of 27Al and 65Cu in the Al65Cu20Ru15 quasicrystal. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:12681-12684. [PMID: 9980430 DOI: 10.1103/physrevb.52.12681] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Klein T, Symko OG, Davydov DN, Jansen AG. Observation of a narrow pseudogap near the fermi level of AlCuFe quasicrystalline thin films. PHYSICAL REVIEW LETTERS 1995; 74:3656-3659. [PMID: 10058260 DOI: 10.1103/physrevlett.74.3656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Stadnik ZM, Zhang GW, Tsai A, Inoue A. Electronic structure of icosahedral Al65Cu20Ru15 studied by photoemission spectroscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:4023-4041. [PMID: 9979238 DOI: 10.1103/physrevb.51.4023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Hill EA, Volkov P, Poon SJ, Wu Y. NMR study of the electronic properties and crystal structure of the semiconducting compound Al2Ru. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:4865-4871. [PMID: 9979356 DOI: 10.1103/physrevb.51.4865] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Shastri A, Borsa F, Torgeson DR, Shield JE, Goldman AI. NMR and NQR study of the electronic and structural properties of Al-Cu-Fe and Al-Cu-Ru quasicrystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:15651-15667. [PMID: 9975931 DOI: 10.1103/physrevb.50.15651] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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