Control of exchange bias by diluting the antiferromagnetic layer | Zendy

A. Misra | Zendy; U. Nowak | Zendy; K. D. Usadel | Zendy

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Control of exchange bias by diluting the antiferromagnetic layer

Author(s) -

A. Misra,

U. Nowak,

K. D. Usadel

Publication year - 2003

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.1543880

Subject(s) - exchange bias , antiferromagnetism , irradiation , dilution , condensed matter physics , field (mathematics) , materials science , layer (electronics) , chemistry , nuclear magnetic resonance , magnetic field , nanotechnology , physics , thermodynamics , magnetic anisotropy , magnetization , nuclear physics , mathematics , quantum mechanics , pure mathematics

The domain state model for exchange bias is used for an investigation of recent experiments where the magnitude and direction of the exchange bias was controlled by He ion irradiation of an FeNi/FeMn sample. The defects in the sample which result from the irradiation are modeled as diluting the antiferromagnet (AFM) after the initial cooling procedure. This late dilution, carried out in presence of a field, leads to a rearrangement of the original domain structure of the AFM resulting in an enhancement or reduction in the bias field.

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