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Title: Lattice relaxation studies in strained epitaxial Fe-Co-C films

Abstract

Aiming at high magnetocrystalline anisotropies, small additions of carbon have been proposed to stabilize a tetragonal lattice distortion in Fe-Co. In the present work, the relaxation mechanisms of Fe-Co films containing 2 at. % C are examined in detail. Film growth on buffers with different lattice constants is compared by a combination of in situ reflection high energy electron diffraction and ex-situ X-ray diffraction measurements. It is shown that relaxation starts at a thickness around 2 nm and ends at a distortion of about 4%, which is independent from the chosen buffer. Integral XRD and magnetization measurements suggest that the relaxation occurs over the complete film thickness.

Authors:
;  [1];  [2];  [1]
  1. IFW Dresden, P.O. Box 270116, 01171 Dresden (Germany)
  2. (Germany)
Publication Date:
OSTI Identifier:
22410022
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; CARBON; COBALT; COMPARATIVE EVALUATIONS; ELECTRON DIFFRACTION; EPITAXY; FILMS; IRON; LATTICE PARAMETERS; MAGNETIZATION; REFLECTION; RELAXATION; STRAINS; TETRAGONAL LATTICES; X-RAY DIFFRACTION

Citation Formats

Reichel, L., E-mail: l.reichel@ifw-dresden.de, Schultz, L., Faculty of Mechanical Engineering, Institute of Materials Science, TU Dresden, 01062 Dresden, and Fähler, S. Lattice relaxation studies in strained epitaxial Fe-Co-C films. United States: N. p., 2015. Web. doi:10.1063/1.4908031.
Reichel, L., E-mail: l.reichel@ifw-dresden.de, Schultz, L., Faculty of Mechanical Engineering, Institute of Materials Science, TU Dresden, 01062 Dresden, & Fähler, S. Lattice relaxation studies in strained epitaxial Fe-Co-C films. United States. doi:10.1063/1.4908031.
Reichel, L., E-mail: l.reichel@ifw-dresden.de, Schultz, L., Faculty of Mechanical Engineering, Institute of Materials Science, TU Dresden, 01062 Dresden, and Fähler, S. Thu . "Lattice relaxation studies in strained epitaxial Fe-Co-C films". United States. doi:10.1063/1.4908031.
@article{osti_22410022,
title = {Lattice relaxation studies in strained epitaxial Fe-Co-C films},
author = {Reichel, L., E-mail: l.reichel@ifw-dresden.de and Schultz, L. and Faculty of Mechanical Engineering, Institute of Materials Science, TU Dresden, 01062 Dresden and Fähler, S.},
abstractNote = {Aiming at high magnetocrystalline anisotropies, small additions of carbon have been proposed to stabilize a tetragonal lattice distortion in Fe-Co. In the present work, the relaxation mechanisms of Fe-Co films containing 2 at. % C are examined in detail. Film growth on buffers with different lattice constants is compared by a combination of in situ reflection high energy electron diffraction and ex-situ X-ray diffraction measurements. It is shown that relaxation starts at a thickness around 2 nm and ends at a distortion of about 4%, which is independent from the chosen buffer. Integral XRD and magnetization measurements suggest that the relaxation occurs over the complete film thickness.},
doi = {10.1063/1.4908031},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}