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arXiv · 1507.00405

Hand in Hand Evolution of b-relaxation and Boson Peak in Metallic Glasses

B. Huang·Z. G. Zhu·T. P. Ge·H. Y. Bai·W. H. Wang
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Abstract

Boson peak and beta-relaxation are two intrinsic and markedly different dynamic modes of glasses, and their structural origins are long-standing issues. Through tuning atomic packing of a model metallic glass with microalloying of different types of elements, we find that low-temperature boson heat capacity peak evolves hand in hand with high-temperature beta-relaxation. A linear correlation between the boson peak temperature and the activation energy of beta-relaxation is disclosed. The coupling of the boson peak and the beta-relaxation indicates their common structural origin of the loosely packed regions in metallic glasses.

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B. Huang, Z. G. Zhu, T. P. Ge, H. Y. Bai, W. H. Wang. 2015-07-02. Hand in Hand Evolution of b-relaxation and Boson Peak in Metallic Glasses. https://arxiv.org/abs/1507.00405

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