Heat-Treatment Induced Magnetic Anisotropy of GaMnSb Films


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Conditions and mechanisms of controlled variation of the magnetic anisotropy of GaMnSb films containing magnetic MnSb nanoinclusions by means of heat treatment have been determined. For this purpose, the temperature and magnetic-field dependences of the magnetic moments of samples before and after thermal annealing were measured using a SQUID magnetometer. It is established that the heat treatment of GaMnSb films leads to a significant increase in the values of characteristics determined by the magnetic anisotropy, including the growth of blocking temperature (from 95 to 390 K) and the magnetic anisotropy field (from 330 to 630 Oe). Results of transmission electron microscopy investigation indicate that a change in the magnetic anisotropy of GaMnSb films as a result of their thermal annealing can be related to a transition of the crystalline structure of magnetic MnSb nanoinclusions from hexagonal (space group P62/mmc) to cubic (space group F-43m).

作者简介

A. Dmitriev

Institute of Problems of Chemical Physics; Russian University of Transport (RUT - MIIT)

编辑信件的主要联系方式.
Email: aid@icp.ac.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432; Moscow, 127994

A. Kochura

Southwest State University

Email: aid@icp.ac.ru
俄罗斯联邦, Kursk, 305040

A. Kuz’menko

Southwest State University

Email: aid@icp.ac.ru
俄罗斯联邦, Kursk, 305040

L. Parshina

Institute of Laser and Information Technologies, Federal Research Center “Crystallography and Photonics,”

Email: aid@icp.ac.ru
俄罗斯联邦, Shatura, Moscow oblast, 140700

O. Novodvorskii

Institute of Laser and Information Technologies, Federal Research Center “Crystallography and Photonics,”

Email: aid@icp.ac.ru
俄罗斯联邦, Shatura, Moscow oblast, 140700

O. Khramova

Institute of Laser and Information Technologies, Federal Research Center “Crystallography and Photonics,”

Email: aid@icp.ac.ru
俄罗斯联邦, Shatura, Moscow oblast, 140700

E. Kochura

Southwest State University

Email: aid@icp.ac.ru
俄罗斯联邦, Kursk, 305040

A. Vasil’ev

Lebedev Physical Institute

Email: aid@icp.ac.ru
俄罗斯联邦, Moscow, 119991

B. Aronzon

Lebedev Physical Institute; Russian Research Center Kurchatov Institute

Email: aid@icp.ac.ru
俄罗斯联邦, Moscow, 119991; Moscow, 123182

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