Asymmetry of Magnetization Reversal of Pinned Layer in NiFe/Cu/NiFe/IrMn Spin-Valve Structure

Two types of asymmetry in giant magnetoresistance (GMR) are observed which are not related to a training effect, but indicate different mechanisms of magnetization reversal of the pinned layer in spin-valve (SV) structures for ascending and descending field scans. GMR, exchange bias and coercivity i...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2014-06, Vol.27 (6), p.1547-1552
Main Authors: Chechenin, N. G., Chernykh, P. N., Dushenko, S. A., Dzhun, I. O., Goikhman, A. Y., Rodionova, V. V.
Format: Article
Language:English
Subjects:
Asymmetry
Characterization and Evaluation of Materials
Condensed Matter Physics
Intermetallics
Iron compounds
Magnetic Materials
Magnetism
Magnetization reversal
Nickel base alloys
Nickel compounds
Original Paper
Physics
Physics and Astronomy
Spacers
Strongly Correlated Systems
Superconductivity
Tantalum
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Summary:Two types of asymmetry in giant magnetoresistance (GMR) are observed which are not related to a training effect, but indicate different mechanisms of magnetization reversal of the pinned layer in spin-valve (SV) structures for ascending and descending field scans. GMR, exchange bias and coercivity in Si/Ta/NiFe/Cu/NiFe/IrMn/Ta SV-structures were investigated as functions of the thickness of the nonmagnetic spacer. The spacer thickness effects are discussed in correlation with layers microstructure and interfaces morphology variations.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-013-2473-0