垂直磁记录薄膜退磁场修正及Delta-M曲线测量方法
Modifying Demagnetization Field and Measuring Method of Delta-M Curves of Perpendicular Magnetic Recording Films
摘 要
垂直磁记录薄膜可以通过Delta-M曲线来判断其磁性晶粒间相互作用等相关磁性能。采用Lakeshore7407型振动样品磁强计（VSM）测量了直流磁控溅射制备的Co23Pt77垂直磁记录薄膜的磁性能，详细介绍了垂直薄膜等温剩磁（IRM）曲线和直流退磁剩磁（DCD）曲线的测量方法及退磁因子的计算方法，确定了退磁场修正方法并讨论了如何根据退磁场修正后的IRM曲线和DCD曲线得到垂直磁记录薄膜的Delta-M曲线。
Delta-M曲线
退磁场修正
等温剩磁曲线
直流退磁剩磁曲线
perpendicular magnetic recording film
Delta-M curve
demagnetization field correction
IRM curve
DCD curve
Abstract
Magnetic intergranular interactions and other magnetic properties of perpendicular magnetic recording films can be judged by Delta-M curves. The magnetic properties of Co23Pt77 perpendicular magnetic recording film prepared by direct current magnetron sputtering method were characterized by using vibrating sample magneto-meter (VSM，Lakeshore7407). The measurement techniques and demagnetization factor correction of isothermal remanent magnetization (IRM) and direct current demagnetization remanence (DCD) of perpendicular recording media were presented in detail. Corrected methods of demagnetization field were determined. In addition, the calculation methods of Delta-M curve from corrected demagnetization IRM curve as well as DCD curve were introduced.
中图分类号 O482.54 DOI 10.11973/lhjy-wl201510005
所属栏目 试验与研究
基金项目 中央高校基本科研业务费资助项目（N140904002）；教育部科学技术研究重大资助项目（313014）
收稿日期 2015/2/6
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备注肖娜（1981-），女，实验师，博士。
引用该论文: XIAO Na,YANG Bo. Modifying Demagnetization Field and Measuring Method of Delta-M Curves of Perpendicular Magnetic Recording Films[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2015, 51(10): 698～700
肖娜,杨波. 垂直磁记录薄膜退磁场修正及Delta-M曲线测量方法[J]. 理化检验－物理分册, 2015, 51(10): 698～700
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【2】BEARDSLEY I A, ZHU J G. Significance of delta M measurements in thin film media［J］. IEEE Transactions on Magnetics, 1991, 27(6): 5037-5039.
【3】WU X W, VAN DE VEERDONK R J M, CHANTRELL R W, et al.Delta M study of perpendicular recording media［J］. Journal of Applied Physics, 2003, 93(10):6760-6762.
【4】CHEN Y J, HUANG T L, SHI J Z, et al. Individual bit island reversal and switching field distribution in perpendicular magnetic bit patterned media［J］. Journal of Magnetism and Magnetic Materials, 2012,324(3):264-268.
【5】冯洁. 垂直磁记录薄膜实施剩余磁化测量时退磁场的补偿［J］. 物理学报, 2003,52(2):487-491.
【6】WOHLFART E P. Relations between different modes of acquisition of remanent magnetization of ferromagnetic particles［J］. Journal of Applied Physics, 1958, 29: 595.
【7】O’GRADY K, CHANTRELLT R W, SANDERS I L. Magnetic characterisation of thin film recording media［J］. IEEE Transactions on Magnetics, 1993, 29(1): 286-291.
【8】李彦波.超高密度磁记录用介质和磁头材料的研究［D］.兰州:兰州大学， 2010.
【9】李震. 光磁混合记录介质物性表征和测量技术研究［D］. 武汉:华中科技大学，2006.
【10】钱志余, 顾月清, 屠国华. 新型振动样品磁强计［J］. 理化检验-物理分册， 1998, 34(2):19-21.
【11】蹇光亮, 周克印. 构件形状对金属磁记忆检测的影响［J］. 理化检验-物理分册，2007, 43(5):242-244.
【12】WU J, HOLLOWAY L, LAIDLER H, et al. Magnetic characterization of perpendicular recording media ［J］. IEEE Transactions on Magnetics, 2002, 38(4): 1682-1686.
【13】肖娜，李松，任玉平，等.垂直磁记录薄膜交换耦合作用及开关场分布的测量［J］.东北大学学报:自然科学版,2013, 34(2):218-222.
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