Mechanisms of coercive force in Co/Mn multilayers

The structures and magnetic properties of Co( t Co)/Mn(20 Å) ( t Co=5–50 Å) multilayers were systematically investigated by X-ray diffractometry and SQUID magnetometry to clarify the mechanism of the generation of coercive force from interfacial exchange coupling. The structures and magnetic propert...

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Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 279; no. 2; pp. 261 - 275
Main Authors Ishida, I., Sagawa, A.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.08.2004
Elsevier Science
Subjects
Co/Mn Multilayer
Coercive force mechanism
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Exchange bias
Exchange interaction
Interfacial exchange coupling
Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Physics
Coercive force mechanism
Co/Mn Multilayer
Exchange interaction
Exchange bias
Interfacial exchange coupling
Magnetization
Domain walls
Magnetic hysteresis
XRD
Spin flop
Cobalt
Thickness
Irreversible processes
Screening
Multilayers
Transition elements
Coercive force
Exchange interactions
Manganese
Magnetic properties
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Summary:The structures and magnetic properties of Co( t Co)/Mn(20 Å) ( t Co=5–50 Å) multilayers were systematically investigated by X-ray diffractometry and SQUID magnetometry to clarify the mechanism of the generation of coercive force from interfacial exchange coupling. The structures and magnetic properties changed extensively with increase in Co layer thickness. The strength of interfacial exchange coupling, the easy direction and strength of exchange interaction of Mn layers, and the affected regions in each Co layer were qualitatively clarified by systematic investigation of the magnetic properties at low temperature. By decomposing the perpendicular hysteresis loop into reversible and irreversible components, the magnetization process was characterized. Some mechanisms underlying generation of coercive force such as decoupling, spin flopping, two step, screening, and domain wall mechanisms were elucidated.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0304-8853
DOI:10.1016/j.jmmm.2004.01.088