Control of magnetic anisotropy and magnetic patterning of perpendicular Co/Pt multilayers by laser irradiation

Journal Article · Mon Jan 02 00:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2161811· OSTI ID:20778522

Schuppler, C; Habenicht, A; Guhr, I L; Maret, M; Leiderer, P; Boneberg, J; Albrecht, M ^[1]

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1. Fachbereich Physik, Universitaet Konstanz, Universitaetsstrasse 10, 78457 Konstanz (Germany)

We report an approach to altering the magnetic properties of (111) textured Co/Pt multilayer films grown on sapphire (0001) substrates in a controlled way using single-pulse laser irradiation. The as-grown films reveal a strong perpendicular magnetic anisotropy induced by interfacial anisotropy. We show that laser irradiation can chemically mix the multilayer structure particularly at the interfaces, hence reducing the perpendicular magnetic anisotropy and coercivity in a controlled manner depending on laser fluence. As a result, perpendicular films can also be magnetically patterned into hard and soft magnetic regions using a regular two-dimensional lattice of polystyrene particles acting as an array of microlenses.

• OSTI ID: 20778522
• Journal Information: Applied Physics Letters, Vol. 88, Issue 1; Other Information: DOI: 10.1063/1.2161811; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
COBALT
COERCIVE FORCE
FILMS
INTERFACES
LASER RADIATION
LASERS
MAGNETIC PROPERTIES
PLATINUM
POLYSTYRENE
SAPPHIRE
SUBSTRATES