Structural and Magnetic Properties of Epitaxial Fe₂₅Pt₇₅

Show simple item record Mankey, Gary 2019-07-18T20:39:55Z 2019-07-18T20:39:55Z 2009-06-29 en_US
dc.identifier.citation Lu, Z., Walock, M., LeClair, P., Mankey, G. (2009): Structural and Magnetic Properties of Epitaxial Fe₂₅Pt₇₅. Journal of Vacuum Science and Technology A, 27(4). DOI: en_US
dc.description.abstract Epitaxial films of Fe₂₅Pt₇₅ have a number of different magnetic phases as a function of temperature and chemical order. For example, chemically ordered epitaxial films have two distinct antiferromagnetic phases at temperatures below ∼160K and exhibit paramagnetism above that temperature. In sharp contrast, chemically disordered epitaxial films are ferromagnetic with a Curie temperature that is greater than 400K. It is demonstrated that by varying the substrate temperature during growth, epitaxial films with varying degrees of chemical order can be produced and it is possible to produce an alloy with the same composition throughout the film with a modified magnetic structure. The authors used polarized neutron reflectivity to gauge the magnetism of a Fe₂₅Pt₇₅ sample produced with a periodic variation in the growth temperature and showed that the sample exhibits a reduced Curie temperature of approximately 300K as compared to bulk Fe₂₅Pt₇₅. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.subject Epitaxy en_US
dc.subject Ferromagnetic materials en_US
dc.subject Paramagnetism en_US
dc.subject X-ray diffraction en_US
dc.subject Thin films en_US
dc.subject Neutron scattering en_US
dc.subject Bragg peak en_US
dc.subject Phase transitions en_US
dc.subject Superlattices en_US
dc.subject Magnetic properties en_US
dc.title Structural and Magnetic Properties of Epitaxial Fe₂₅Pt₇₅ en_US
dc.type text en_US

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