Structural relaxation of Zr70Be30 and Zr67Cu33 metallic glasses: low-energy vibrational modes, electron spectrum and superconductivity

Autor:	A.P. Zhernov, G. F. Syrykh, A. V. Suetin, M.N. Khlopkin
Rok vydání:	1995
Předmět:	Superconductivity Amorphous metal Condensed matter physics Annealing (metallurgy) Chemistry Fermi level Electron Condensed Matter Physics Electronic Optical and Magnetic Materials symbols.namesake Coupling parameter Molecular vibration Materials Chemistry Ceramics and Composites symbols Debye model
Zdroj:	Journal of Non-Crystalline Solids. 181:244-250
ISSN:	0022-3093
DOI:	10.1016/s0022-3093(94)00503-6
Popis:	Measurements of the low-temperature specific heat are presented for the metallic glasses Zr70Be30 and Zr67Cu33 in the as-quenched (cooling rate ∼ 106 K/s) and relaxed (annealing at T = 450 K for 2 h) states. Structure relaxation increases both electron density of states at the Fermi level and the Debye temperature, and at the same time the temperature of the superconducting transition decreases. The main parameters of the attractive interelectron interaction spectrum: coupling parameter, λ, and the effective frequency, ωph, have been determined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::08a4435b6a6d4b492598198de4bd8c57 https://doi.org/10.1016/s0022-3093(94)00503-6 Zobrazit plný text záznamu Full Text from ScienceDirect