Magnetoresistance effects of Fe-Mn/Ni-Fe-Co/(Au, Ag, Al)/Ni-Fe-Co sandwiches

Magnetoresistance effects and film structures have been investigated in [Hf/Fe-Mn/Ni-Fe-Co/(Au, Ag, Al)/Ni-Fe-Co/Hf/Si] sandwiches. The sandwiches show high magnetoresistance ratios when the Au and Ag spacers are thicker than 2.0 and 4.0 nm, respectively. The resistivity changes are almost equal to...

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Veröffentlicht in:	Japanese Journal of Applied Physics 1995, Vol.34 (5A), p.2312-2317
Hauptverfasser:	NAKATANI, R, HOSHIYA, H, HOSHINO, K, NOGUCHI, S, SUGITA, Y
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Electrical properties of specific thin films Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronic transport phenomena in thin films and low-dimensional structures Exact sciences and technology Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects) Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) Magnetic films and multilayers Magnetic properties and materials Magnetic properties of surface, thin films and multilayers Metal and metallic alloys Metals and metallic alloys Physics
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Zusammenfassung:	Magnetoresistance effects and film structures have been investigated in [Hf/Fe-Mn/Ni-Fe-Co/(Au, Ag, Al)/Ni-Fe-Co/Hf/Si] sandwiches. The sandwiches show high magnetoresistance ratios when the Au and Ag spacers are thicker than 2.0 and 4.0 nm, respectively. The resistivity changes are almost equal to those of [Hf/Fe-Mn/Ni-Fe-Co/Cu/Ni-Fe-Co/Hf/Si] sandwiches. The sandwiches with Al spacers show magnetoresistance ratios of almost 0%, although the configuration of magnetisations of the two Ni-Fe-Co layers changes between parallel and antiparallel. Each sandwich has a strong (111) texture. The thickness of the Ag spacer is not homogeneous. The sandwiches show about the same thermal stabilities, whether the nonmagnetic spacer is Cu, Ag or Au.
ISSN:	0021-4922 1347-4065
DOI:	10.1143/JJAP.34.2312