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PROPAGATING CHARACTERISTICS OF ULTRASONIC WAVE IN THE MAGNETIC LIQID

DU YOU-WEI TONG XING-WU ZHONG WEI WANG TING-XIANG GAN CHANG-MING ZHANG XIAO-RONG

PROPAGATING CHARACTERISTICS OF ULTRASONIC WAVE IN THE MAGNETIC LIQID

DU YOU-WEI, TONG XING-WU, ZHONG WEI, WANG TING-XIANG, GAN CHANG-MING, ZHANG XIAO-RONG
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  • Received Date:  28 January 1991
  • Published Online:  03 July 2005

PROPAGATING CHARACTERISTICS OF ULTRASONIC WAVE IN THE MAGNETIC LIQID

  • 1. (1)南京大学固体微结构物理国家实验室,南京,210008; (2)南京大学声学研究所,南京,210008

Abstract: Here we report experimental results of propagating characteristics of ultrasonic wave and explain it in light of existing theories. First, we study the relaxation process after magnetic field built up. It is known that the particles form chain-like clusters when the magnetic field is applied. The process of the cluster for mation is a relaxation process. The ultrasonic velocity v as a function of magnetic field at field angle θ= 0 and π/2 at 4MHz were measured. We have studied the dependence of velocity on. Concentrations of the magnetic particles and frequency. The experimental results can be explain by Tarapov's theory rather than th approach used by Parsons.

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