Magnetic anisotropy of L10-FePt film on (001) LaAlO3

L10-FePt films are fabricated layer by layer using the magnetic sputtering technique at different growth temperatures. Structure, ordering process and magnetic properties of the films are studied. The film is partly ordered at the growth temperature of 300°C, and reaches a completely ordered state a...

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2013-04, Vol.332, p.89-92
Main Authors: Zhang, A.M., Zhu, W.H., Zheng, L., Huang, L., Gao, J.L., Tang, S.L., Wu, X.S.
Format: Article
Language:English
Subjects:
Coercive force
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Deposition
Distortion
Exact sciences and technology
Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)
L10-FePt film
Lattice strain
Magnetic anisotropy
Magnetic properties
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Magnetism
Physics
Sputtering
Temperature dependence
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:L10-FePt films are fabricated layer by layer using the magnetic sputtering technique at different growth temperatures. Structure, ordering process and magnetic properties of the films are studied. The film is partly ordered at the growth temperature of 300°C, and reaches a completely ordered state at deposition temperature of 400°C. With increasing the substrate temperature from 400°C to 500°C, the out-of-plane coercivity increases dramatically from 5.69KOe to 16.3KOe, and the magnetic anisotropy Ku increases from 2.0×107erg/cm3 to 4.5×107erg/cm3. The surface structure of the film varies with the growth temperature. We attribute the temperature dependence of magnetic properties to the decreased tetragonal distortion at high temperature. ► [Fe/Pt]16 multilayers are deposited on LAO substrate at different substrate temperatures. ► (001)-preferred L10-FePt films are obtained at deposition temperature of 400°C. ► Out-of-plane coercivity is 5.69KOe and 16.3KOe for substrate temperature of 400°C and 500°C, respectively. ► Surface structure is single-domain islands at substrate temperature of 500°C. ► Improved magnetic properties are ascribed to the decreased tetragonal distortion of the film grown at high temperature.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2012.12.016