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Fragility of 1D Floppy Materials
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.6 ) Pub Date : 2020-05-14 , DOI: 10.1002/pssb.202000206
Keiji Tanaka 1
Affiliation  

The fragility works as a fundamental concept characterizing glass‐forming liquids, whereas its atomic structural interpretation remains a challenge. Herein, viscosity behaviors in polyethylene (PE), S, Se, and Te are examined, which consist of distorted chain molecules with varied interchain strength, in comparison with that in SiO2, a typical strong material. Among the 1D materials, S and PE appear to be fairly strong. Such results suggest that the viscosity exhibits Arrhenius‐type behaviourif it is governed by single microscopic mechanisms such as SiO bond scission or interchain slippages. In contrast, Se and Te appear fragile with non‐Arrhenius variations, which could be ascribable to mixed inter‐ and intrachain interactions. Among these floppy materials, it is known that Se is the best glass former, the reason being discussed.

中文翻译:

一维软盘材料的易碎性

易碎性是表征玻璃成形液体的基本概念,而其原子结构解释仍然是一个挑战。在此,与典型的坚固材料SiO 2相比,研究了聚乙烯(PE),S,Se和Te的粘度行为,该行为由链间强度不同的扭曲链分子组成。在一维材料中,S和PE似乎很坚固。这样的结果表明,粘度显示出阿累尼乌斯型behaviourif它是由单一的微观的机制,例如Si支配O键断裂或链间打滑。相比之下,Se和Te表现出易碎性,且无Arrhenius变异,这可能归因于链间和链内相互作用的混合。在这些松散材料中,众所周知,Se是最好的玻璃形成剂,其原因正在讨论中。
更新日期:2020-05-14
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