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

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

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

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arxiv 1507.00405 v1 pith:BW3G42ZB submitted 2015-07-02 cond-mat.mtrl-sci

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 This is my paper

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keywords bosonpeakbeta-relaxationhandglassesmetallicdifferentstructural

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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.

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

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