Systematic control of stress-induced anisotropy in pseudomorphic iron garnet thin films

Iron garnets are one of the most well-studied magnetic materials that enabled magnetic bubble memories and magneto-optical devices employing films with a perpendicular easy axis. However, most studies have been conducted on rather thick films (>1μm), and it has not been elucidated whether it is p...

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2013-08, Vol.339, p.63-70
Main Authors: Kubota, M., Shibuya, K., Tokunaga, Y., Kagawa, F., Tsukazaki, A., Tokura, Y., Kawasaki, M.
Format: Article
Language:English
Subjects:
Anisotropy
Bubbles
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Devices
Epitaxial strain
Exact sciences and technology
Garnets
Hydroxyapatite
Iron
Iron garnet
Magnetic anisotropy
Magnetic properties and materials
Magnetic properties of monolayers and thin films
Magnetic properties of surface, thin films and multilayers
Nanostructure
Physics
Pulsed-laser deposition (PLD)
Strain
Thin film
Thin films
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:Iron garnets are one of the most well-studied magnetic materials that enabled magnetic bubble memories and magneto-optical devices employing films with a perpendicular easy axis. However, most studies have been conducted on rather thick films (>1μm), and it has not been elucidated whether it is possible to align the magnetic easy axis perpendicular to the film plane for much thinner (1 for thin films with HA values larger than 20kOe. Among the films grown, Tm3Fe5O12 on Gd3Ga5O12 showed the largest ε// and HA values of +0.5% and +25kOe, respectively, to realize an apparently perpendicular easy axis, confirmed by a large M⊥/M// value of 7.8. Further, magnetic force microscope images showed a maze pattern typical of a perpendicularly magnetized film. These results reveal a method for tailoring the magnetic anisotropy of garnet ultrathin films by utilizing epitaxial strain. These thin films may be utilized to obtain nanoscale magnetic bubbles for use in novel devices. ► The effects of epitaxial strain and composition on the magnetic properties. ► 50-nm-thick garnet thin films grown by pulsed laser deposition. ► The magnetization ratio systematically varies with stress-induced anisotropy field. ► Tailoring the magnetic anisotropy in garnet ultra-thin films utilizing epitaxial strain.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2013.02.045