Ultrasonic attenuation measurements in ErRh4B4 near 1 K |
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| Authors: | N. Toyota S.B. Woods Y. Muto |
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| Affiliation: | Department of Physics, The University of Alberta Edmonton, Alberta, T6G 2Jl Canada;The Research Institute for Iron, Steel and Other Metals Tohoku University, Katahira, Sendai, 980 Japan |
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| Abstract: | Ultrasonic attenuation measurements on a polycrystalline specimen of ErRh4B4 near 1° K and in magnetic fields up to 14 kOe are reported. A broad peak in zero-field attenuation is observed near Tc2, the temperature at which ferromagnetic order appears. At large magnetic fields ( > Hc2) a larger attenuation is observed when the propagation vector of the sound wave is perpendicular to the field direction than when it is parallel. The interpretation of these results is discussed. |
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