Angular dependence of the exchange bias and coercivity of IrMn/Co bilayers

Nicolodi  S; Pereira  LG; Schmidt  JENagamine  LCCMViegas  ADCDeranlot  CPetroff  FGeshev  J

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Angular dependence of the exchange bias and coercivity of IrMn/Co bilayers

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In this study we present the in-plane angular dependences of the exchange-bias and coercive fields of magnetron-sputtered IrMn/Co exchange-coupled system before and after magnetic field annealing. Two experimental techniques were employed for the magnetic characterization of the samples, i.e., alternate gradient field magnetometry and anisotropic magnetoresistance measurements, which gave practically the same value for the exchange-bias field shift. An increase of the exchange-bias field and a substantial decrease of the coercivity are observed after the annealing. A phenomenological model was also used to adjust the data and to derive the anisotropy characteristics. (c) 2006 Elsevier B.V. All rights reserved.

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《Physica, B. Condensed Matter》 |2006年第2期|141-143|共3页
作者
Nicolodi S; Pereira LG; Schmidt JENagamine LCCMViegas ADCDeranlot CPetroff FGeshev J;
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作者单位

UFRGS, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil;

UFSM, CCNE, Dept Fis, BR-97105900 Santa Maria, RS, Brazil;

Univ Paris 11, F-91405 Orsay, FranceCNRS, Unite Mixte Phys, F-91767 Thales, France;

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正文语种英语
中图分类物理学;
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magnetic anisotropy; domain effects; magnetization curves; hysteresis;

Angular dependence of the exchange bias and coercivity of IrMn/Co bilayers

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