Abstract The ultrasonic velocity V and attenuation A of both longitudinal and shear waves in an anisotropic NdFeB magnet were measured over the temperature range from 80K to 300 K by the pulse echo method. The anisotropy of the ultrasonic wave propagating in a NdFeB magnet was observed. Anomalous changes in both V-T and A-T curves in the temperature range of 110-160 K were found, which might be due to the spin reorientation phase transition of Nd2Fe14B.
Received: 09 December 1991
Accepted manuscript online:
Fund: Project supported in part by the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.
Cite this article:
LUO YANG (罗阳), HOU YU-MIN (侯玉敏), JI QI-GEN (计其根) A STUDY ON THE ULTRASONIC VELOCITY AND ATTENU-ATION IN NdFeB MAGNET WITHIN THE TEMPERATURE RANGE OF 80-300K(Ⅰ) 1993 Acta Physica Sinica (Overseas Edition) 2 190
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