Open AccessExchange bias in single-crystalline CuO nanowires
Author(s) -
C. Dı́az-Guerra,
María Vila,
J. Piqueras
Publication year - 2010
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.3428658
Subject(s) - exchange bias , antiferromagnetism , nanowire , condensed matter physics , materials science , spins , anisotropy , core (optical fiber) , field (mathematics) , magnetic anisotropy , nanotechnology , magnetic field , magnetization , physics , composite material , optics , quantum mechanics , mathematics , pure mathematics
Exchange anisotropy has been observed and investigated in single-crystalline CuO nanowires grown by thermal oxidation of Cu. The exchange bias field decreases by increasing temperature and can be tuned by the strength of the cooling field. A training effect has also been observed. The obtained results can be understood in terms of a phenomenological core-shell model, where the core of the CuO nanowire shows antiferromagnetic behavior and the surrounding shell behaves as a spin glass-like system due to uncompensated surface spins
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