Magnetic properties of sputtered Permalloy/molybdenum multilayers

Journal Article · Sat Oct 15 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3647768· OSTI ID:22038743

Romera, M; Ciudad, D; Maicas, M; Aroca, C ^[1]; Ranchal, R ^[2]

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1. ISOM and Dpto. Fisica Aplicada, E.T.S.I. Telecomunicacion, Universidad Politecnica de Madrid, Ciudad Universitaria s/n, Madrid 28040 (Spain)
2. Dpto. Fisica de Materiales, Facultad CC. Fisicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, Madrid 28040 (Spain)

In this work, we report the magnetic properties of sputtered Permalloy (Py: Ni{sub 80}Fe{sub 20})/molybdenum (Mo) multilayer thin films. We show that it is possible to maintain a low coercivity and a high permeability in thick sputtered Py films when reducing the out-of-plane component of the anisotropy by inserting thin film spacers of a non-magnetic material like Mo. For these kind of multilayers, we have found coercivities which are close to those for single layer films with no out-of-plane anisotropy. The coercivity is also dependent on the number of layers exhibiting a minimum value when each single Py layer has a thickness close to the transition thickness between Neel and Bloch domain walls.

• OSTI ID: 22038743
• Journal Information: Journal of Applied Physics, Vol. 110, Issue 8; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
COERCIVE FORCE
DEPOSITION
DOMAIN STRUCTURE
FERROMAGNETIC MATERIALS
INTERFACES
LAYERS
MAGNETIC SUSCEPTIBILITY
MOLYBDENUM
PERMALLOY
SPUTTERING
THIN FILMS