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Universal structural softening in metallic glasses indicated by boson heat capacity peak
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; Jiang, MQ, Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
2017-12-25
发表期刊APPLIED PHYSICS LETTERS
卷号111期号:26
ISSN0003-6951
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.

DOI10.1063/1.5016984
收录类别SCI ; EI
语种英语
WOS记录号WOS:000418947200013
关键词[WOS]TEMPERATURE SPECIFIC-HEAT ; THERMAL-CONDUCTIVITY ; CRYSTALLIZATION ; SCATTERING
WOS研究方向Physics
WOS类目Physics, Applied
项目资助者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)
论文分区二类/Q1
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72225
专题非线性力学国家重点实验室
通讯作者Jiang, MQ, Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
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 Jiang MQ.,Peterlechner M.,Wang YJ.,Wang WH.,Jiang F.,...&Jiang, MQ, Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China..(2017).Universal structural softening in metallic glasses indicated by boson heat capacity peak.APPLIED PHYSICS LETTERS,111(26).
MLA Jiang MQ,et al."Universal structural softening in metallic glasses indicated by boson heat capacity peak".APPLIED PHYSICS LETTERS 111.26(2017).
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