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Indexed by:期刊论文

Date of Publication:2010-01-01

Journal:CHINESE PHYSICS B

Included Journals:SCIE、EI、ISTIC

Volume:19

Issue:1

ISSN No.:1674-1056

Key Words:metallic glasses; Boson peak; specific heat

Abstract:The low temperature specific heat of Sm-Al-Co ternary metallic glasses is investigated and a clear anomaly associated with the Boson peak is identified. While this anomaly depends slightly on the chemical composition, it has no dependence on external magnetic field. To figure out the mechanism of the Boson peak, we interpret the data within various model frameworks. Unlike earlier work, our study shows that this Boson peak is mainly ascribed to an additional T(2) term of the specific heat, which may originate from the quasi-two-dimensional and short-range ordered structure units possibly existing in the metallic glasses.