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Low-temperature acoustic characteristics of the amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5

Gaiduk, A. L. and Bezuglyi, E. V. and Fil, V. D. and Johnson, W. L. (1997) Low-temperature acoustic characteristics of the amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5. Low Temperature Physics, 23 (10). pp. 857-860. ISSN 1063-777X. http://resolver.caltech.edu/CaltechAUTHORS:GAIltp97

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Abstract

The temperature dependences of the sound velocity v and attenuation alpha of high-frequency (50–160 MHz) sound in the bulk amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5 are studied at helium temperatures in the normal and superconducting states. The alloy is characterized by a relatively small constant C determining the intensity of interaction between an elastic wave and two-level systems. The density of states of the latter systems is estimated. The peculiarities in the variation of v during the superconducting transition point to the possibility of a gapless superconductivity in a narrow temperature interval near Tc.


Item Type:Article
Additional Information:©1997 American Institute of Physics. (Submitted July 22, 1997). Fiz. Nizk. Temp. 23, 1139–1143 (October 1997) The authors are grateful to V.Z. Bengus, E.D. Tabachnikova, and A.S. Bakai for fruitful discussions and to E.A. Masalitin for his assistance in preparing the apparatus.
Subject Keywords:zirconium alloys, titanium alloys, copper alloys, nickel alloys, beryllium alloys, metallic glasses, acoustic wave velocity, acoustic wave absorption, ultrasonic absorption, ultrasonic velocity, type II superconductors, superconducting transition temperature
Record Number:CaltechAUTHORS:GAIltp97
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:GAIltp97
Alternative URL:http://dx.doi.org/10.1063/1.593459
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10282
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:22 Apr 2008
Last Modified:26 Dec 2012 09:58

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