MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Cooling Rate and Composition Dependences of Magnetic Susceptibility for Zr54−xCu30+xAl8Ag8 Glassy Alloys
Ichiro SekiRie Y. UmetsuGuo-Qiang XieNaoyuki NomuraXin-Min WangTakao Hanawa
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2013 Volume 54 Issue 8 Pages 1356-1360

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Abstract

Cooling rate and composition dependences of the magnetic susceptibility for Zr54−xCu30+xAl8Ag8 glassy alloys which are candidate materials for magnetic resonance imaging (MRI) were investigated. Lower magnetic susceptibility was achieved by reducing Zr content in the present series of the alloys, and also by higher cooling rate during the preparing glassy alloys. The magnetic susceptibility values were hard to be explained by the simple free-electron model. It is suggesting that the effects of the enhancement of the density of states by 4d-conduction band should be taken into the consideration. The results obtained by utilizing the pair correlation functions suggested that the different magnetic susceptibilities between the ribbon and bulk glassy alloys were originated from the structural difference in the middle range order caused by the different cooling rates.

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© 2013 The Japan Institute of Metals and Materials
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