Thermal expansion anomaly in amorphous YFe spin glasses

The thermal expansion anomaly in amorphous Y sub 100-x Fe sub x (70 < =x < =92.5) alloys has been measured with a differential transformer-type dilatometer. A large thermal expansion anomaly is observed in spite of the absence of ferromagnetism, and its magnitude is as large as that of amorpho...

Full description

Saved in:
Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 1994-05, Vol.181-182 (1-2), p.954-957
Main Authors: Suzuki, Takeshi, Fujita, Asaya, Chiang, Te-Hsuan, Fukamichi, Kazuaki
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermal expansion anomaly in amorphous Y sub 100-x Fe sub x (70 < =x < =92.5) alloys has been measured with a differential transformer-type dilatometer. A large thermal expansion anomaly is observed in spite of the absence of ferromagnetism, and its magnitude is as large as that of amorphous Lu-Fe alloys which exhibit a re-entrant spin-glass behavior. This clearly indicates that the magnetovolume effect is not necessarily correlated with the appearance of ferromagnetism. The large negative electronic contribution to the thermal expansion coefficient of amorphous Y-Fe alloys is similar to that of Fe-based Fe-Ni alloys. Such a characteristic property is explained by taking into account the amplitude of the local moment.
ISSN:0921-5093
DOI:10.1016/0921-5093(94)90777-3