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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
Source PublicationAPPLIED PHYSICS LETTERS
2017-12-25
Volume111Issue:26
ISSN0003-6951
Abstract

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
Indexed BySCI ; EI
Language英语
WOS IDWOS:000418947200013
WOS KeywordTEMPERATURE SPECIFIC-HEAT ; THERMAL-CONDUCTIVITY ; CRYSTALLIZATION ; SCATTERING
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
Funding OrganizationNational 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)
Classification二类/Q1
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/72225
Collection非线性力学国家重点实验室
Recommended Citation
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).
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