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Demagnetizing correction in fluxmetric measurements of magnetization curves and hysteresis loops of ferromagnetic cylinders


HighlightsA technique of demagnetizing correction for M(H)curves of ferromagnetic cylinders is proposed.Accurate fluxmetric demagnetizing factor as a function of differential susceptibility is used.Samples of different lengths cut from the same cylinder are studied to show the techinique validity.AbstractA technique is proposed for demagnetizing correction of the measured magnetization curve and hysteresis loop, i.e., theM(Ha)curve, of a ferromagnetic cylinder into the trueM(H)curve of the material, whereHais the uniform applied field provided by a long solenoid andMis the magnetization measured by a fluxmeter with the measuring coil surrounding the cylinder midplane. Different from ordinary demagnetizing correction by using a fixed demagnetizing factor, an(Ha,M)-dependent fluxmetric demagnetizing factorNf(γ,χd)is used in this technique, whereγis the ratio of cylinder length to diameter,χdis the differential susceptibility on the correctedM(H)curve, andNf(γ,χd)is approximated by accurately calculatedNf(γ,χ)of paramagnetic cylinders of the sameγandχ=χd. The validity of the technique is studied by comparing results for several samples of different lengths cut from the same cylinder. Such a demagnetizing correction is unambiguous but its success requires very high accuracy in theNfdetermination andM(Ha)measurements.......

【作者名称】: Du-Xing Chen, Enric Pardo, Yong-Hong Zhu, Li-Xiong Xiang, Jia-Quan Ding
【作者单位】: Departament de Física, Universitat Autònoma de Barcelona, Institute of Electrical Engineering, Slovak Academy of Sciences, Hunan Forever Elegance Technology, Hunan Forever Elegance Technology, Hunan Forever Elegance Technology
【关 键 词】: Demagnetizing correction in fluxmetric measurements of magnetization curves and hysteresis loops of ferromagnetic cylinders
【期刊名称】: Journal of magnetism and magnetic materials
【期刊论文数据库】: [DBS_Articles_01]
【期刊论文编号】: 107,448,230
【摘要长度】: 6,867
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