Magnetic anisotropy of epitaxial zinc ferrite thin films grown by pulsed laser deposition

Epitaxial zinc ferrite thin films are grown on (001) SrTiO3 substrates by pulsed laser deposition. The magnetic anisotropy of the films is examined by superconducting quantum interference device magnetometry and ferromagnetic resonance, with various in-plane and out-of-plane orientations of the magn...

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Bibliographic Details
Published in:Thin solid films 2013-01, Vol.527, p.273-277
Main Authors: Timopheev, A.A., Azevedo, A.M., Sobolev, N.A., Brachwitz, K., Lorenz, M., Ziese, M., Esquinazi, P., Grundmann, M.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Curie temperature
Epitaxial growth
Exact sciences and technology
Ferrite
Ferromagnetic resonance
Laser deposition
Magnetic anisotropy
Magnetic fields
Magnetic properties and materials
Magnetic properties of monolayers and thin films
Magnetic properties of surface, thin films and multilayers
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Oxide thin film
Physics
Pulsed laser deposition
Structure and morphology
thickness
Superconducting quantum interference device
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Thin film structure and morphology
Thin films
Zinc
Zinc ferrite
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Description
Summary:Epitaxial zinc ferrite thin films are grown on (001) SrTiO3 substrates by pulsed laser deposition. The magnetic anisotropy of the films is examined by superconducting quantum interference device magnetometry and ferromagnetic resonance, with various in-plane and out-of-plane orientations of the magnetic field. The volume magnetization of the films is found to be around 55kA/m. The existence of a cubic magnetic anisotropy is shown, with the easy axes oriented along the [111] crystallographic directions. The films show ferrimagnetic properties with a Curie temperature higher than 350K. The nature of a strong “easy-plane”-type bimodal anisotropy in the films is discussed. ► Normal spinel ZnFe2O4 gained up to now not much attention. ► Recently, semiconducting ZnFe2O4 thin films were established. ► Magnetic anisotropy of ZnFe2O4 thin films on SrTiO3 was shown. ► Anisotropy was measured by ferromagnetic resonance. ► Modeling of anisotropy constants and magnetic activation volume
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2012.12.028