中国物理B ›› 1993, Vol. 2 ›› Issue (3): 190-197.doi: 10.1088/1004-423X/2/3/004

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A STUDY ON THE ULTRASONIC VELOCITY AND ATTENU-ATION IN NdFeB MAGNET WITHIN THE TEMPERATURE RANGE OF 80-300K(Ⅰ)

罗阳a,侯玉敏a,计其根b   

  1. a Beijing Quenchmag Incoporation, Beijing 100084,China;  b Nanjing Normal University, Nanjing 210025, China
  • 收稿日期:1991-12-09 出版日期:1993-03-20 发布日期:1993-03-20
  • 基金资助:
    Project supported in part by the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.

A STUDY ON THE ULTRASONIC VELOCITY AND ATTENU-ATION IN NdFeB MAGNET WITHIN THE TEMPERATURE RANGE OF 80-300K(Ⅰ)

LUO YANG (罗阳)a, HOU YU-MIN (侯玉敏)a, JI QI-GEN (计其根)b   

  1. a. Beijing Quenchmag Incoporation, Beijing 100084,China;  b. Nanjing Normal University, Nanjing 210025, China
  • Received:1991-12-09 Online:1993-03-20 Published:1993-03-20
  • Supported by:
    Project supported in part by the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.

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摘要： 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.

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.

中图分类号: 

  • 4335