中国物理B ›› 2010, Vol. 19 ›› Issue (5): 57502-057502.doi: 10.1088/1674-1056/19/5/057502

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First-order reversal curves of magnetic recording tapes

阴津华, 潘礼庆   

  1. Department of Physics, University of Science and Technology Beijing, Beijing 100083, China
  • 收稿日期:2009-01-31 修回日期:2009-12-21 出版日期:2010-05-15 发布日期:2010-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~50672008 and 50971023) and Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No.~20090006120019).

First-order reversal curves of magnetic recording tapes

Yin Jin-Hua(阴津华)† and Pan Li-Qing(潘礼庆)   

  1. Department of Physics, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2009-01-31 Revised:2009-12-21 Online:2010-05-15 Published:2010-05-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~50672008 and 50971023) and Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No.~20090006120019).

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摘要： The interaction and its variation between magnetic grains in two kinds of magnetic recording tapes are investigated by first-order reversal curves (FORC) and the $\delta M$ method. The composition and microstructure of the samples are characterised by x-ray diffraction and scanning electron microscope. The FORC diagram can provide more accurate information of the interaction and its variation, but the $\delta M$ curves cannot. The positive interaction field and the large variation of the interaction field have opposite effects on the $\delta M$ curve.

Abstract: The interaction and its variation between magnetic grains in two kinds of magnetic recording tapes are investigated by first-order reversal curves (FORC) and the $\delta M$ method. The composition and microstructure of the samples are characterised by x-ray diffraction and scanning electron microscope. The FORC diagram can provide more accurate information of the interaction and its variation, but the $\delta M$ curves cannot. The positive interaction field and the large variation of the interaction field have opposite effects on the $\delta M$ curve.

Key words: magnetic interaction , first-order reversal curves, the $\delta$ M method, magnetic recording tape

中图分类号:  (Magnetic recording materials)

  • 75.50.Ss
61.05.cp (X-ray diffraction) 68.37.Hk (Scanning electron microscopy (SEM) (including EBIC)) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)