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島根大学理学部紀要 Volume 20
published_at 1986-12-25
Gd_<0.7>Y_<0.2>Lu_<0.1>における,らせんスピン反強磁性磁区
Ultrasonic Study of Screw Spin Antiferromagnetic Domains in Gd_<0.7>Y_<0.2>Lu_<0.1>
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Ultrasonic attenuation and sound velocity have been measured for a single crystal of the Gd_<0.7>Y_<o.2>Lu_<0.1> alloy over the temperature range 160−230 K which includes the ferromagnetic and screw spin antiferromagnetic states. The anomalies observed in attenuation and velocity, which are present only when the specimen is heated up from the ferromagnetic state, are attributed to screw spin antiferromagnetic domains. This view is also confirmed by thermal cycling and magnetic field cycling studies.
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