Exchange coupling in epitaxial CoO/NiFe bilayers with compensated and uncompensated interfacial spin structures -: art. no. 174422

被引:58
作者
Gökemeijer, NJ [1 ]
Penn, RL
Veblen, DR
Chien, CL
机构
[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[2] Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA
来源
PHYSICAL REVIEW B | 2001年 / 63卷 / 17期
关键词
D O I
10.1103/PhysRevB.63.174422
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An uncompensated antiferromagnetic surface of CoO is essential for the establishment of exchange bias. Exchange coupling for compensated surfaces is manifested by a large coercivity but no exchange bias field. Degradation of a compensated surface leads to an exchange bias field. These results clarify a key outstanding issue in exchange bias.
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页数:4
相关论文
共 16 条
[1]   GIANT MAGNETORESISTANCE IN SOFT FERROMAGNETIC MULTILAYERS [J].
DIENY, B ;
SPERIOSU, VS ;
PARKIN, SSP ;
GURNEY, BA ;
WILHOIT, DR ;
MAURI, D .
PHYSICAL REVIEW B, 1991, 43 (01) :1297-1300
[2]   Perpendicular coupling in exchange-biased Fe3O4/CoO superlattices [J].
Ijiri, Y ;
Borchers, JA ;
Erwin, RW ;
Lee, SH ;
van der Zaag, PJ ;
Wolf, RM .
PHYSICAL REVIEW LETTERS, 1998, 80 (03) :608-611
[3]  
KANAMORI J, 1957, PROG THEOR PHYS, V17, P197, DOI 10.1143/PTP.17.197
[4]   Calculations of exchange bias in thin films with ferromagnetic/antiferromagnetic interfaces [J].
Koon, NC .
PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4865-4868
[5]   MECHANISMS OF EXCHANGE-ANISOTROPY [J].
MALOZEMOFF, AP .
JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :3874-3879
[6]   SIMPLE-MODEL FOR THIN FERROMAGNETIC-FILMS EXCHANGE COUPLED TO AN ANTIFERROMAGNETIC SUBSTRATE [J].
MAURI, D ;
SIEGMANN, HC ;
BAGUS, PS ;
KAY, E .
JOURNAL OF APPLIED PHYSICS, 1987, 62 (07) :3047-3049
[7]   NEW MAGNETIC ANISOTROPY [J].
MEIKLEJOHN, WH ;
BEAN, CP .
PHYSICAL REVIEW, 1957, 105 (03) :904-913
[8]   NEW MAGNETIC ANISOTROPY [J].
MEIKLEJOHN, WH ;
BEAN, CP .
PHYSICAL REVIEW, 1956, 102 (05) :1413-1414
[9]   Effects of cooling field strength on exchange anisotropy at permalloy/CoO interfaces [J].
Moran, TJ ;
Schuller, IK .
JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) :5109-5111
[10]   Positive exchange bias in FeF2-Fe bilayers [J].
Nogues, J ;
Lederman, D ;
Moran, TJ ;
Schuller, IK .
PHYSICAL REVIEW LETTERS, 1996, 76 (24) :4624-4627