Lattice expansion by oxygen addition to control crystallographic orientations in chemically ordered L10 FePt films

Author

Lee, H. ; Kim, J.

Author_Institution

Carnegie Mellon Univ., Pittsburgh

fYear

2006

fDate

8-12 May 2006

Firstpage

477

Lastpage

477

Abstract

L1₀ FePt thin films attract attention for extremely high densities beyond 1 Tera bit/in² due to their large magnetocrystalline anisotropy (7-10times10⁷ ergs/cc). However, chemically ordered [001] FePt films are not easily tailored on conventional substrates. Hetero-epitaxial underlayers, post-annealed FePt multilayer films, and low kinetic deposition have been suggested to develop the [001] c-axis orientation for perpendicular media applications. In this work, oxygen was introduced to reduce the lattice mismatch with underlayer stack, aiming the [001] FePt films on commercial polycrystalline substrates.

Keywords

annealing; crystal orientation; iron alloys; magnetic anisotropy; magnetic multilayers; magnetic thin films; platinum alloys; FePt; chemically ordered Ll0 films; crystallographic orientations; hetero-epitaxial underlayers; kinetic deposition; lattice expansion; lattice mismatch; magnetocrystalline anisotropy; oxygen addition; perpendicular media applications; polycrystalline substrates; post-annealed multilayer films; underlayer stack; Anisotropic magnetoresistance; Chemicals; Crystallography; Kinetic theory; Lattices; Magnetic anisotropy; Magnetic multilayers; Magnetosphere; Perpendicular magnetic anisotropy; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.376201

Filename

4261910