CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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First-order reversal curves of magnetic recording tapes |
Yin Jin-Hua(阴津华)† and Pan Li-Qing(潘礼庆) |
Department of Physics, University of Science and Technology Beijing, Beijing 100083, China |
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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.
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Received: 31 January 2009
Revised: 21 December 2009
Accepted manuscript online:
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PACS:
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75.50.Ss
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(Magnetic recording materials)
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61.05.cp
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(X-ray diffraction)
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68.37.Hk
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(Scanning electron microscopy (SEM) (including EBIC))
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75.60.Ej
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(Magnetization curves, hysteresis, Barkhausen and related effects)
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Fund: 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). |
Cite this article:
Yin Jin-Hua(阴津华) and Pan Li-Qing(潘礼庆) First-order reversal curves of magnetic recording tapes 2010 Chin. Phys. B 19 057502
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