Effect of external magnetic field on ultrasonic propagation velocity in magnetic fluids

Masaaki Motozawa, Yoshiyuki Matsumoto, Tatsuo Sawada

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Experimental results for the properties of ultrasonic propagation velocity in kerosene-based and water-based magnetic fluids are reported. Ultrasonic wave frequencies of 1 MHz, 2 MHz and 4 MHz are used and the measurement scheme is based on the pulse method. The external magnetic field intensity is varied from 0 mT to 550 mT and the angle between the magnetic field direction and the direction of ultrasonic wave propagation is varied from 0° to 90°. The ultrasonic propagation velocity in magnetic fluids is dependent on temperature, elapsed time of applying the magnetic field, and magnetic field intensity. Hysteresis and anisotropy of ultrasonic propagation velocity are observed. These interesting results seem to be related to chain-like cluster formation in the magnetic fluids and the characteristic period of Brownian motion of the magnetic particles.

Original languageEnglish
Pages (from-to)471-477
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume48
Issue number3
DOIs
Publication statusPublished - 2006 Feb 15

Fingerprint

Ultrasonic propagation
Magnetic fluids
propagation velocity
ultrasonics
ultrasonic radiation
Magnetic fields
magnetic flux
fluids
magnetic fields
kerosene
Brownian movement
wave propagation
Ultrasonic waves
Kerosene
hysteresis
Hysteresis
anisotropy
Anisotropy
pulses
water

Keywords

  • Anisotropy
  • Chain-like cluster
  • Hysteresis
  • Magnetic fluid
  • Sound velocity
  • Ultrasonic propagation velocity

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

Cite this

Effect of external magnetic field on ultrasonic propagation velocity in magnetic fluids. / Motozawa, Masaaki; Matsumoto, Yoshiyuki; Sawada, Tatsuo.

In: JSME International Journal, Series B: Fluids and Thermal Engineering, Vol. 48, No. 3, 15.02.2006, p. 471-477.

Research output: Contribution to journalArticle

@article{c43aabe860bf4c8ab88a80638497b494,
title = "Effect of external magnetic field on ultrasonic propagation velocity in magnetic fluids",
abstract = "Experimental results for the properties of ultrasonic propagation velocity in kerosene-based and water-based magnetic fluids are reported. Ultrasonic wave frequencies of 1 MHz, 2 MHz and 4 MHz are used and the measurement scheme is based on the pulse method. The external magnetic field intensity is varied from 0 mT to 550 mT and the angle between the magnetic field direction and the direction of ultrasonic wave propagation is varied from 0° to 90°. The ultrasonic propagation velocity in magnetic fluids is dependent on temperature, elapsed time of applying the magnetic field, and magnetic field intensity. Hysteresis and anisotropy of ultrasonic propagation velocity are observed. These interesting results seem to be related to chain-like cluster formation in the magnetic fluids and the characteristic period of Brownian motion of the magnetic particles.",
keywords = "Anisotropy, Chain-like cluster, Hysteresis, Magnetic fluid, Sound velocity, Ultrasonic propagation velocity",
author = "Masaaki Motozawa and Yoshiyuki Matsumoto and Tatsuo Sawada",
year = "2006",
month = "2",
day = "15",
doi = "10.1299/jsmeb.48.471",
language = "English",
volume = "48",
pages = "471--477",
journal = "JSME International Journal, Series B: Fluids and Thermal Engineering",
issn = "1340-8054",
publisher = "Japan Society of Mechanical Engineers",
number = "3",

}

TY - JOUR

T1 - Effect of external magnetic field on ultrasonic propagation velocity in magnetic fluids

AU - Motozawa, Masaaki

AU - Matsumoto, Yoshiyuki

AU - Sawada, Tatsuo

PY - 2006/2/15

Y1 - 2006/2/15

N2 - Experimental results for the properties of ultrasonic propagation velocity in kerosene-based and water-based magnetic fluids are reported. Ultrasonic wave frequencies of 1 MHz, 2 MHz and 4 MHz are used and the measurement scheme is based on the pulse method. The external magnetic field intensity is varied from 0 mT to 550 mT and the angle between the magnetic field direction and the direction of ultrasonic wave propagation is varied from 0° to 90°. The ultrasonic propagation velocity in magnetic fluids is dependent on temperature, elapsed time of applying the magnetic field, and magnetic field intensity. Hysteresis and anisotropy of ultrasonic propagation velocity are observed. These interesting results seem to be related to chain-like cluster formation in the magnetic fluids and the characteristic period of Brownian motion of the magnetic particles.

AB - Experimental results for the properties of ultrasonic propagation velocity in kerosene-based and water-based magnetic fluids are reported. Ultrasonic wave frequencies of 1 MHz, 2 MHz and 4 MHz are used and the measurement scheme is based on the pulse method. The external magnetic field intensity is varied from 0 mT to 550 mT and the angle between the magnetic field direction and the direction of ultrasonic wave propagation is varied from 0° to 90°. The ultrasonic propagation velocity in magnetic fluids is dependent on temperature, elapsed time of applying the magnetic field, and magnetic field intensity. Hysteresis and anisotropy of ultrasonic propagation velocity are observed. These interesting results seem to be related to chain-like cluster formation in the magnetic fluids and the characteristic period of Brownian motion of the magnetic particles.

KW - Anisotropy

KW - Chain-like cluster

KW - Hysteresis

KW - Magnetic fluid

KW - Sound velocity

KW - Ultrasonic propagation velocity

UR - http://www.scopus.com/inward/record.url?scp=33344466255&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33344466255&partnerID=8YFLogxK

U2 - 10.1299/jsmeb.48.471

DO - 10.1299/jsmeb.48.471

M3 - Article

VL - 48

SP - 471

EP - 477

JO - JSME International Journal, Series B: Fluids and Thermal Engineering

JF - JSME International Journal, Series B: Fluids and Thermal Engineering

SN - 1340-8054

IS - 3

ER -