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Chin. Phys. B, 2010, Vol. 19(5): 057502    DOI: 10.1088/1674-1056/19/5/057502
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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
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.
Keywords:  magnetic interaction       first-order reversal curves      the $\delta$ M method      magnetic recording tape  
Received:  31 January 2009      Revised:  21 December 2009      Accepted manuscript online: 
PACS:  75.50.Ss (Magnetic recording materials)  
  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)  
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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