On the utility of low frequency, polarised, complex susceptibility measurements in the investigation of the dynamic properties of magnetic fluids
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- 作者：Qiang Lia ; b ; P.C. Fannina ; pfannin@tcd.ie" class="auth_mail" title="E-mail the corresponding author ; C.N. Marinc ; I. Malaescuc ; K. Rajd
- 关键词：Magnetic fluids ; Complex susceptibility ; Relaxation effects ; Magnetic losses ; Hysteresis
- 刊名：Journal of Molecular Liquids
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：219
- 期：Complete
- 页码：773-779
- 全文大小：944 K
文摘
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We measure χ ' (ω) and χ ' ' (ω) for two samples which display Debye type profiles, over the frequency range 100 Hz to 1 MHz.
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Data on χ ' ' (ω), tanδ, and sinδ, and their dependence on the polarising field, H, is determined.
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An expression for the relationship between χ ' ' (ω), tanδ and sinδ is presented.
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± Polarised measurements show susceptibility profiles to be symmetrical and a mirror image of each other.