TY - JOUR
T1 - Thermal expansion anomaly in amorphous YFe spin glasses
AU - Suzuki, Takeshi
AU - Fujita, Asaya
AU - Chiang, Te Hsuan
AU - Fukamichi, Kazuaki
N1 - Funding Information:
This work was supportedb y a Grant-in-Aid for Scientific Research( 04402045)fr om the Ministry of EducationS, ciencea ndC ulturei n Japan.
PY - 1994/5/15
Y1 - 1994/5/15
N2 - The thermal expansion anomaly in amorphous Y100-xFex (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 LuFe 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 YFe alloys is similar to that of Fe-based FeNi alloys. Such a characteristic property is explained by taking into account the amplitude of the local moment.
AB - The thermal expansion anomaly in amorphous Y100-xFex (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 LuFe 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 YFe alloys is similar to that of Fe-based FeNi alloys. Such a characteristic property is explained by taking into account the amplitude of the local moment.
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U2 - 10.1016/0921-5093(94)90777-3
DO - 10.1016/0921-5093(94)90777-3
M3 - Article
AN - SCOPUS:0028427026
SN - 0921-5093
VL - 181-182
SP - 954
EP - 957
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - C
ER -