Properties of ultrasonic propagation in functional fluids under magnetic fields

Masaaki Motozawa, Tatsuo Sawada, Yoshiyuki Matsumoto

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The properties of ultrasonic propagation velocity in water-based and kerosene-based magnetic fluids and an MR fluid are examined experimentally. The ultrasonic frequency used is 1 MHz and the measurement scheme is based on the pulse method. The external magnetic field intensity is varied from 0 mT to 550 mT and is swept at a constant rate dB/dt (sweep rate). The ultrasonic propagation velocity changes with applied magnetic field and hysteresis is observed. The properties of ultrasonic propagation seem to be highly influenced by the formation of chain-like clusters (in the magnetic fluids) and robust clusters (in the MR fluid).

Original languageEnglish
Pages (from-to)4914-4921
Number of pages8
JournalInternational Journal of Modern Physics B
Volume21
Issue number28-29
Publication statusPublished - 2007 Nov 10

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Keywords

  • MR fluid
  • Magnetic fluid
  • Ultrasonic propagation velocity
  • Ultrasound

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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