Universal structural softening in metallic glasses indicated by boson heat capacity peak
文献类型:期刊论文
作者 | Jiang MQ(蒋敏强); Peterlechner M; Wang YJ(王云江); Wang WH(汪卫华); Jiang F; Dai LH(戴兰宏); Wilde G |
刊名 | APPLIED PHYSICS LETTERS |
出版日期 | 2017-12-25 |
卷号 | 111期号:26 |
ISSN号 | 0003-6951 |
DOI | 10.1063/1.5016984 |
文献子类 | Article |
英文摘要 | Low-temperature heat capacity is systematically investigated in various glassy and crystalline polymorphs of a wide range of metallic glasses. We reveal that the boson heat capacity peak beyond the Debye level arises from both excess phonon scattering and background electronic excitation, and the two contributions are strongly coupled and also material-dependent. It is interesting to observe that the boson heat capacity peaks obey an inversely linear correlation between their heights and characteristic positions, which is mainly dominated by phonic anomalies. This indicates a universal structural softening among the studied glasses when the boson peak occurs. We further suggest a possibility that the linear evolution of the fast boson peaks can probe into the slow structural softening across the glass transition, and the two dynamic processes are controlled by the short-time shear modulus associated with local soft regions in fragile glasses. Published by AIP Publishing. |
分类号 | 二类/Q1 |
WOS关键词 | TEMPERATURE SPECIFIC-HEAT ; THERMAL-CONDUCTIVITY ; CRYSTALLIZATION ; SCATTERING |
WOS研究方向 | Physics |
语种 | 英语 |
WOS记录号 | WOS:000418947200013 |
资助机构 | National Natural Science Foundation of China(11522221 ; Strategic Priority Research Program(XDB22040303) ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences(QYZDJSSW-JSC011) ; D.F.G.(Wi 1899/27-2 ; 11790292 ; SPP1594) ; 11372315) |
源URL | [http://dspace.imech.ac.cn/handle/311007/72225] |
专题 | 力学研究所_非线性力学国家重点实验室 |
推荐引用方式 GB/T 7714 | Jiang MQ,Peterlechner M,Wang YJ,et al. Universal structural softening in metallic glasses indicated by boson heat capacity peak[J]. APPLIED PHYSICS LETTERS,2017,111(26). |
APA | 蒋敏强.,Peterlechner M.,王云江.,汪卫华.,Jiang F.,...&Wilde G.(2017).Universal structural softening in metallic glasses indicated by boson heat capacity peak.APPLIED PHYSICS LETTERS,111(26). |
MLA | 蒋敏强,et al."Universal structural softening in metallic glasses indicated by boson heat capacity peak".APPLIED PHYSICS LETTERS 111.26(2017). |
入库方式: OAI收割
来源:力学研究所
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