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Title: Interplay between structural and magnetic properties of L1{sub 0}-FePt(001) thin films directly grown on MgO(001)

Abstract

We present a detailed study of the magnetic and structural properties of L1{sub 0}-FePt thin films. The films are prepared via molecular beam epitaxy directly onto MgO(001) substrates, i.e., without buffer layer. Despite the large lattice misfit between the in-plane lattice parameters of L1{sub 0} FePt and MgO, highly ordered thin films are obtained with the easy magnetization c axis perpendicular to the film plane. Via high resolution transmission electron microscopy and Rutherford backscattering measurements we focus on the FePt/MgO interface to study the misfit relaxation and the defect density. Further, the influence of elevated substrate temperatures and of postgrowth high temperature annealing on the structural and magnetic properties is discussed.

Authors:
; ; ; ; ;  [1]; ; ;  [2]
  1. Instituut voor Kern-en Stralingsfysica and INPAC, K.U. Leuven, Celestijnenlaan 200 D, B-3001 Leuven (Belgium)
  2. Fakultaet fuer Physik, Universitaet Wien, Strudlhofgasse 4, A-1090 Wien (Austria)
Publication Date:
OSTI Identifier:
21190120
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 105; Journal Issue: 7; Other Information: DOI: 10.1063/1.3093955; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; CRYSTAL GROWTH; DISLOCATIONS; IRON ALLOYS; LATTICE PARAMETERS; LAYERS; MAGNESIUM OXIDES; MAGNETIC PROPERTIES; MAGNETIZATION; MOLECULAR BEAM EPITAXY; PLATINUM ALLOYS; RUTHERFORD BACKSCATTERING SPECTROSCOPY; SUBSTRATES; TEMPERATURE DEPENDENCE; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Laenens, B, Almeida, F M, Planckaert, N, Temst, K, Meersschaut, J, Vantomme, A, Rentenberger, C, Rennhofer, M, and Sepiol, B. Interplay between structural and magnetic properties of L1{sub 0}-FePt(001) thin films directly grown on MgO(001). United States: N. p., 2009. Web. doi:10.1063/1.3093955.
Laenens, B, Almeida, F M, Planckaert, N, Temst, K, Meersschaut, J, Vantomme, A, Rentenberger, C, Rennhofer, M, & Sepiol, B. Interplay between structural and magnetic properties of L1{sub 0}-FePt(001) thin films directly grown on MgO(001). United States. https://doi.org/10.1063/1.3093955
Laenens, B, Almeida, F M, Planckaert, N, Temst, K, Meersschaut, J, Vantomme, A, Rentenberger, C, Rennhofer, M, and Sepiol, B. 2009. "Interplay between structural and magnetic properties of L1{sub 0}-FePt(001) thin films directly grown on MgO(001)". United States. https://doi.org/10.1063/1.3093955.
@article{osti_21190120,
title = {Interplay between structural and magnetic properties of L1{sub 0}-FePt(001) thin films directly grown on MgO(001)},
author = {Laenens, B and Almeida, F M and Planckaert, N and Temst, K and Meersschaut, J and Vantomme, A and Rentenberger, C and Rennhofer, M and Sepiol, B},
abstractNote = {We present a detailed study of the magnetic and structural properties of L1{sub 0}-FePt thin films. The films are prepared via molecular beam epitaxy directly onto MgO(001) substrates, i.e., without buffer layer. Despite the large lattice misfit between the in-plane lattice parameters of L1{sub 0} FePt and MgO, highly ordered thin films are obtained with the easy magnetization c axis perpendicular to the film plane. Via high resolution transmission electron microscopy and Rutherford backscattering measurements we focus on the FePt/MgO interface to study the misfit relaxation and the defect density. Further, the influence of elevated substrate temperatures and of postgrowth high temperature annealing on the structural and magnetic properties is discussed.},
doi = {10.1063/1.3093955},
url = {https://www.osti.gov/biblio/21190120}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 7,
volume = 105,
place = {United States},
year = {Wed Apr 01 00:00:00 EDT 2009},
month = {Wed Apr 01 00:00:00 EDT 2009}
}