Title :
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
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;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376201
