高斯型非均匀应力对铁磁薄膜磁化性质的影响

朱洁; 苏垣昌; 潘靖; 封国林

doi:10.7498/aps.62.167503

摘要

采用Monte-Carlo方法研究了高斯型非均匀应力对的铁磁薄膜磁化性质的影响.结果表明: 与易轴平行的拉应力和与易轴垂直的压应力能够增大系统的矫顽场, 而与易轴平行的压应力和与易轴垂直的拉应力则会减小系统的矫顽场.在矫顽场增大(减小)的同时, 系统还伴随着剩磁及其矩形度的增大(减小).更有意义的是, 在与易轴平行的压应力或与易轴垂直的拉应力作用下, 在应力的集中区域会出现易轴旋转的现象. 这种产生易轴旋转的应力集中区域的范围强烈地依赖于应力的强度和分布宽度.

关键词:

Abstract

The effects of Gaussian type inhomogeneous stress and strain on the magnetic properties in ferromagnetic thin films are studied by Monte-Carlo simulation. The results show that the coercive field could be enhanced by the strain parallel to the easy axis and stress perpendicular to the easy axis, on the other hand, it could also be weakened by the stress parallel to the easy axis and strain perpendicular to the easy axis. The coercive field increases (or decreases) in the system, meanwhile, the remanent magnetization and squareness increase (or decrease) as well. More interestingly, the easy axis will rotate within the centralized region under stress parallel to the initial easy axis and strain perpendicular to the initial easy axis. The range of centralized region with easy axis rotation is strongly dependent on the magnitude of stress or strain and the width of its distribution.

Keywords:

作者及机构信息

1.
扬州大学物理科学与技术学院, 扬州 225002

基金项目: 国家自然科学基金(批准号: 11247026, 11104239)资助的课题.

Authors and contacts

1.
College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11247026, 11104239).

参考文献

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施引文献

[1]	Aharoni A 2001 Physica B 306 1
[2]	Peng B, Zhang W L, Zhang W X, Jiang H C, Yang S Q 2006 Physica B 382 135
[3]	Zhan Q F, Vandezande S, Temst K, Haesendonck C V 2009 Phys. Rev. B 80 094416
[4]	Paes V Z C, Mosca D H 2013 J. Magn. Magn. Mater. 330 81
[5]	Xu X Y, Qian L J, Hu J G 2009 Acta Phys. Sin. 58 2023 (in Chinese) [许小勇, 钱丽洁, 胡经国 2009 物理学报 58 2023]
[6]	Annadurai A, Raja M M, Prabahar K, Kumar A, Kannan M D, Jayakumar S 2011 J. Magn. Magn. Mater. 323 2797
[7]	Pan J, Tao Y C, Hu J G 2006 Acta Phys. Sin. 55 3032 (in Chinese) [潘靖,陶永春,胡经国 2006 物理学报 55 3032]
[8]	Kwon C, Robson M C, Kim K-C, Gu J Y, Lofland S E, Bhagat S M, Trajanovic Z, Rajeswari M, Venkatesan T, Kratz A R, Gomez R D, Ramesh R 1997 J. Magn. Magn. Mater. 172 229
[9]	Atulasimha J, Flatau A B 2011 Smart Mater. Struct. 20 043001
[10]	Kellogg R A, Flatau A B, Clark A E, Wun-Fogle M, Lograsso T A 2002 J. Appl. Phys. 91 7821
[11]	Mahadevan A, Evans P G, Dapino M J 2010 J. Appl. Phys. 96 012502
[12]	Zhang H, Zeng D C, Liu Z W 2011 Acta Phys. Sin. 60 067503 (in Chinese) [张辉, 曾德长, 刘仲武 2011 物理学报 60 067503]
[13]	Clark A E, Wun-Fogle M, Restorff J B, Lograsso T A 2002 Mater. T. JIM. 43 881
[14]	Rigue J, Chrischon D, De Andrade A M H, Carara M 2012 J. Magn. Magn. Mater. 324 1561
[15]	Ludwig A, Tewes M, Glasmachers S, Löhndorf M, Quandt E 2002 J. Magn. Magn. Mater. 242-245 1126
[16]	Dokupil S, Bootsmann M-T, Stein S, Löhndorf M, Quandt E 2005 J. Magn. Magn. Mater. 290-291 795
[17]	Dai G H, Zhan Q F, Liu Y W, Yang H L, Zhang X S, Chen B, Li R W 2012 Appl. Phys. Lett. 100 122407
[18]	Wang Y L, Zhang P C, Liu H R, Liu B T, Fu G S 2011 Acta Phys. Sin. 60 077702 (in Chinese) [王英龙, 张鹏程, 刘虹让, 刘保亭, 傅广生 2011 物理学报 60 077702]
[19]	Barraud C, Deranlot C, Seneor P, Mattana R, Dlubak B, Fusil S, Bouzehouane K, Deneuve D, Petroff F, Fert A 2010 Appl. Phys. Lett. 96 072502
[20]	Thang P D, Rijnders G, Blank D H A 2007 J. Magn. Magn. Mater. 310 2621
[21]	Mitchell P V, Mountfield K R, Artman J O 1988 J. Appl. Phys. 63 2917
[22]	Hu J G, Jin G J, Hu A, Ma Y Q 2004 Eur. Phys. J. B 40 265
[23]	Yamahara H, Mikami M, Seki M, Tabata H 2011 J. Magn. Magn. Mater. 323 3143

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