Atomic Structural Origin of Fictive Temperature Revealed by AZnP3O9 (A=K,Rb) Glasses |
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| Authors: | Di Xu Xin Liu Ji Wang Qian-Qian Liu Rong Fu He Lin Ling Chen Li-Min Wang Li-Ming Wu |
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| Institution: | 1. Center for Advanced Materials Research, Beijing Normal University, Zhuhai, 519087 P. R. China;2. College of Chemistry, Beijing Normal University, Beijing, 100875 P. R. China;3. State Key Lab of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao, Hebei, 066004 P. R. China;4. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204 P. R. China |
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| Abstract: | The fictive temperature (Tf) is widely applied to understand the relaxation thermodynamics of a glass; however, its atomic structural origin is still unclear. Here, we report two novel AZnP3O9 glasses obtained by melting the composition identical single crystals. These glasses exhibit structural inheritance within 5 Å from the single crystal counterparts that is quantified by δ=nglass/ncry (0≤δ≤1, n is the number of pair correlation functions). Among the available glass-formers, glassKZnP3O9 exhibits the highest structural inheritance (δ=1, nglass=8). More insightfully, a reverse correlation between δ and the relaxation thermodynamic parameters is observed in glassAZnP3O9, revealing for the first time the atomic structural origin of fictive temperature. |
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| Keywords: | Fictive Temperature Glass Short-Range Order Structure Thermodynamics |
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