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Indexed by:期刊论文

Date of Publication:2010-10-01

Journal:JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

Included Journals:SCIE、EI、Scopus

Volume:322

Issue:19

Page Number:2845-2850

ISSN No.:0304-8853

Key Words:Metallic glass; Cluster spin glass; Exchange interaction

Abstract:We perform detailed investigation on the magnetization and specific heat of Sm-based ternary bulk metallic glasses with different Co contents at low temperature. A low temperature cluster spin-glass phase below T-f similar to 25 K is evidenced for all samples. This cluster spin-glass behavior is ascribed to competition among the multi-fold magnetic interactions and the intrinsic structural in homogeneity. The magnetic relaxation behavior of the spin-glass phase can be well described using the stretched exponential dynamics. The magnetic hysteresis under field-cooling condition and spin dynamics further demonstrate the low temperature cluster spin-glass behavior. It is revealed that the Co atoms play an important role in modulating the physical properties of the present Sm-based ternary metallic glasses. (C) 2010 Elsevier B.V. All rights reserved.