Interpretation of hysteresis measurements for perpendicular double-layer media

• Dan S. Bloomberg

  Xerox Corp., Palo Alto Research Center, Palo Alto, California 94304

抄録

A method is given for the extraction, from VSM measurements, of saturation magnetization, coercivity, thickness, and squareness of perpendicularly oriented double-layer media. The CoCr coercivity in double-layer films is found to be less than that in similarly prepared single-layer films. The importance of coil balancing, sample centering, and sample alignment is discussed. For ideally square loops with demagnetizing factor 4π, all properties of each layer can be determined. The literature on CoCr, although conflicting, suggests these ideal conditions are not met. An independent measurement of thickness is required to determine the intrinsic squareness and demagnetizing factor. The degree of sensitivity of the results to these two parameters is derived.

収録刊行物

• Journal of Applied Physics

  Journal of Applied Physics 57 (8), 3934-3936, 1985-04-15

  AIP Publishing

キーワード

• General Physics and Astronomy

詳細情報

• CRID: 1360292618848207744
• NII論文ID: 30015829151
• NII書誌ID: AA00693547
• DOI: 10.1063/1.334921
• ISSN: 10897550
• ISSN: 00218979
• Web Site: https://pubs.aip.org/aip/jap/article-pdf/57/8/3934/18410602/3934_1_online.pdf
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