Issue |
EPL
Volume 115, Number 3, August 2016
|
|
---|---|---|
Article Number | 37008 | |
Number of page(s) | 6 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/115/37008 | |
Published online | 09 September 2016 |
Magnetic anisotropy peculiarities of high-temperature ferromagnetic MnxSi1−x (x ≈ 0.5) alloy films
1 P.L. Kapitza Institute for Physical Problems RAS - Kosygina St. 2, 119334 Moscow, Russia
2 National Research Centre “Kurchatov Institute” - Kurchatov Sq. 1, 123182 Moscow, Russia
3 Kotel'nikov Institute of Radio Engineering and Electronics RAS - 141190 Fryazino, Moscow region, Russia
4 Institute on Laser and Information Technologies RAS - Svyatoozerskaya St. 1, 140700 Shatura, Moscow region, Russia
5 Prokhorov General Physics Institute RAS - Vavilov St. 38, 119991 Moscow, Russia
6 Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research Bautzner Landstrasse 400, 01328 Dresden, Germany
Received: 15 April 2016
Accepted: 19 August 2016
Thin films of MnxSi1−x alloys with different Mn concentration grown by the pulsed-laser deposition (PLD) method onto the Al2O3 (0001) substrate were investigated in the temperature range 4–300 K using ferromagnetic resonance (FMR) measurements in the wide range of frequencies
and magnetic fields
. For samples with
, FMR data show clear evidence of ferromagnetism (FM) with high Curie temperatures
. These samples demonstrate the complex and unusual character of magnetic anisotropy described in the frame of phenomenological model as a combination of the essential second-order easy-plane anisotropy contribution and the additional fourth-order anisotropy contribution with the easy direction normal to the film plane. We explain the obtained results by a polycrystalline (mosaic) structure of the films caused by the film-substrate lattice mismatch.
PACS: 75.70.-i – Magnetic properties of thin films, surfaces, and interfaces / 75.30.Gw – Magnetic anisotropy / 76.50.+g – Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance
© EPLA, 2016
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