Exchange bias in spin glass (FeAu)/NiFe thin films

被引：34

作者：

Yuan, Fu-Te ^{[1
]}

Lin, Jeng-Kai ^{[1
]}

Yao, Y. D. ^{[2
]}

Lee, Shang-Fan ^{[1
]}

机构：

[1] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[2] Fu Jen Catholic Univ, Dept Phys, Taipei 24205, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 16期

关键词：

INTERFACES; ANISOTROPY; BILAYERS; ALLOYS; MODEL; AUFE;

D O I：

10.1063/1.3399780

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The exchange bias of a ferromagnet in contact with a spin glass is evidenced in the sputter deposited (Fe 9.6 at. % Au)/NiFe bilayers. The biasing field decreases as temperature increases, change the sign after reaching a compensation temperature (T(o)), and are reduced to zero at higher temperatures. Furthermore, T(o) decreases with the decreasing FeAu layer thickness. Likewise, the inverse bias decreases with the increasing maximum field of a hysteresis loop. A spin structure model is suggested to explain our data. The results confirm the robust nature of the inverse bias in spin glass/ferromagnetic structure and reveal distinct physics from conventional antiferromagnetic/ferromagnetic systems. (C) 2010 American Institute of Physics. [doi:10.1063/1.3399780]

引用

收藏

页数：3

相关论文

共 16 条

[1] Antiferromagnetic layer thickness dependence of the IrMn/Co exchange-bias system [J].

Ali, M ;

Marrows, CH ;

Al-Jawad, M ;

Hickey, BJ ;

Misra, A ;

Nowak, U ;

Usadel, KD .

PHYSICAL REVIEW B, 2003, 68 (21)

[2] Exchange bias using a spin glass [J].

Ali, Mannan ;

Adie, Patrick ;

Marrows, Christopher H. ;

Greig, Denis ;

Hickey, Bryan J. ;

Stamps, Robert L. .

NATURE MATERIALS, 2007, 6 (01) :70-75

[3] Asymmetric reversal modes in ferromagnetic/antiferromagnetic multilayers [J].

Beckmann, B ;

Nowak, U ;

Usadel, KD .

PHYSICAL REVIEW LETTERS, 2003, 91 (18)

[4] Origin of the asymmetric magnetization reversal behavior in exchange-biased systems:: Competing anisotropies -: art. no. 057204 [J].

Camarero, J ;

Sort, J ;

Hoffmann, A ;

García-Martín, JM ;

Dieny, B ;

Miranda, R ;

Nogués, J .

PHYSICAL REVIEW LETTERS, 2005, 95 (05)

[5] Microscopic model for exchange anisotropy [J].

de Almeida, JRL ;

Rezende, SM .

PHYSICAL REVIEW B, 2002, 65 (09) :1-4

[6] Calculations of exchange bias in thin films with ferromagnetic/antiferromagnetic interfaces [J].

Koon, NC .

PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4865-4868

[7] THE FERROMAGNETIC-ANTIFERROMAGNETIC PROPERTIES OF COPPER-MANGANESE AND SILVER-MANGANESE ALLOYS [J].

KOUVEL, JS .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1961, 21 (1-2) :57-70

[8] Asymmetric reversal in inhomogeneous magnetic heterostructures [J].

Li, Zhi-Pan ;

Petracic, Oleg ;

Morales, Rafael ;

Olamit, Justin ;

Batlle, Xavier ;

Liu, Kai ;

Schuller, Ivan K. .

PHYSICAL REVIEW LETTERS, 2006, 96 (21)

[9] RANDOM-FIELD MODEL OF EXCHANGE-ANISOTROPY AT ROUGH FERROMAGNETIC-ANTIFERROMAGNETIC INTERFACES [J].

MALOZEMOFF, AP .

PHYSICAL REVIEW B, 1987, 35 (07) :3679-3682

[10] Kerr observations of asymmetric magnetization reversal processes in CoFe/IrMn bilayer systems [J].

McCord, J ;

Schäfer, R ;

Mattheis, R ;

Barholz, KU .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (09) :5491-5497