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Acta Physica Sinica (Overseas Edition), 1993, Vol. 2(3): 190-197    DOI: 10.1088/1004-423X/2/3/004
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

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
a. Beijing Quenchmag Incoporation, Beijing 100084,China;  b. Nanjing Normal University, Nanjing 210025, China
Abstract  The ultrasonic velocity 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: 
PACS:  4335  
  7525  
  7530  
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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