Kerr microscopy study of magnetization reversal in uniaxial Co-films

被引:22
作者
Idigoras, O. [1 ]
Vavassori, P. [1 ]
Porro, J. M. [1 ]
Berger, A. [1 ]
机构
[1] CIC NanoGUNE Consolider, E-20018 Donostia San Sebastian, Spain
关键词
Magnetization reversal; Kerr microscopy; Magnetic thin film; Magnetic domain;
D O I
10.1016/j.jmmm.2010.05.052
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have studied the magnetization reversal Co(1 0 (1) under bar 0) films as a function of the applied field orientation by means of magneto-optical Kerr effect microscopy. Hereby, we find that while stable intermediate domain states exist for most field directions, their occurrence is suppressed for field orientations along the easy axis of magnetization. To facilitate this study, we have developed a data extraction methodology that allows for the quantitative analysis and compact display of entire magnetization distribution field-sequences in a single picture. It furthermore allows for the automated data analysis to unambiguously distinguish magnetization rotation processes from field-induced domain formation. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:L57 / L60
页数:4
相关论文
共 28 条
[1]   Experimental observation of disorder-driven hysteresis-loop criticality [J].
Berger, A ;
Inomata, A ;
Jiang, JS ;
Pearson, JE ;
Bader, SD .
PHYSICAL REVIEW LETTERS, 2000, 85 (19) :4176-4179
[2]   Quantitative vector magnetometry using generalized magneto-optical ellipsometry [J].
Berger, A ;
Pufall, MR .
JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) :4583-4585
[3]   Generalized magneto-optical ellipsometry [J].
Berger, A ;
Pufall, MR .
APPLIED PHYSICS LETTERS, 1997, 71 (07) :965-967
[4]   Magnetic hysteresis loop tuning in antiferromagnetically coupled bilayer structures [J].
Berger, A ;
Margulies, DT ;
Do, H .
APPLIED PHYSICS LETTERS, 2004, 85 (09) :1571-1573
[5]   Improved media performance in optimally coupled exchange spring layer media [J].
Berger, A. ;
Supper, N. ;
Ikeda, Y. ;
Lengsfield, B. ;
Moser, A. ;
Fullerton, E. E. .
APPLIED PHYSICS LETTERS, 2008, 93 (12)
[6]  
Bertotti G., 1998, HYSTERESIS MAGNETISM
[7]  
Blundell S., 2001, MAGNETISM CONDENSED
[8]   Magnetic relaxation in thin Co films with in-plane magnetization [J].
Boukari, S ;
Allenspach, R ;
Bischof, A .
PHYSICAL REVIEW B, 2001, 63 (18)
[9]   Ultrafast magnetization reversal dynamics investigated by time domain imaging [J].
Choi, BC ;
Belov, M ;
Hiebert, WK ;
Ballentine, GE ;
Freeman, MR .
PHYSICAL REVIEW LETTERS, 2001, 86 (04) :728-731
[10]   A 4-mb toggle MRAM based on a novel bit and switching method [J].
Engel, BN ;
Akerman, J ;
Butcher, B ;
Dave, RW ;
DeHerrera, M ;
Durlam, M ;
Grynkewich, G ;
Janesky, J ;
Pietambaram, SV ;
Rizzo, ND ;
Slaughter, JM ;
Smith, K ;
Sun, JJ ;
Tehrani, S .
IEEE TRANSACTIONS ON MAGNETICS, 2005, 41 (01) :132-136