Exchange Bias in Co/FeMn and Co/IrMn Structures Induced by Deposition in Presence of Magnetic Field

Abstract:

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By measuring the angular dependence of ferromagnetic resonance field at room and low temperatures, it is demonstrated that the magnitude of magnetic field applied during magnetron deposition of Ta/F/AF/Ta structures, where F=Co, NiFe and AF=FeMn and IrMn, influences the uniaxial and unidirectional anisotropy, magnetization and the exchange bias blocking temperature. The deposition field effects on the bilayer structure are compared with the effects on a similar structure, but without antiferromagnetic layer. The exchange bias blocking temperature of investigated structures is found to be significantly lower than the Néel temperature of a bulk antiferromagnet. The origin of the observed effects is shortly discussed.

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Periodical:

Solid State Phenomena (Volume 190)

Edited by:

N. Perov and V. Rodionova

Pages:

93-96

DOI:

10.4028/www.scientific.net/SSP.190.93

Citation:

I.O. Dzhun et al., "Exchange Bias in Co/FeMn and Co/IrMn Structures Induced by Deposition in Presence of Magnetic Field", Solid State Phenomena, Vol. 190, pp. 93-96, 2012

Online since:

June 2012

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$38.00

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