Temperature dependences of the magnetic anisotropy constants of single-crystal inclusions MnSb in an InSb matrix

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Abstract

The contributions of the first order K1 and second order K2 magnetic anisotropy constants to the effective constant are separated. Their competition determines the type of magnetic anisotropy «easy plane». Extrapolation of the dependences K1(T) and K2(T) to the region of high temperatures made it possible to predict the temperature TSR = 570 K, which corresponds to the spin-reorientation transition, at which the easy-axis magnetic anisotropy is formed.

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About the authors

A. I. Dmitriev

Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences

Author for correspondence.
Email: aid@icp.ac.ru
Russian Federation, Chernogolovka

A. V. Kochura

Southwest State University; Lebedev Physical Institute of the Russian Academy of Sciences

Email: aid@icp.ac.ru
Russian Federation, Kursk; Moscow

A. P. Kuzmenko

Southwest State University

Email: aid@icp.ac.ru
Russian Federation, Kursk

Zaw Htet Aung

Southwest State University

Email: aid@icp.ac.ru
Russian Federation, Kursk

V. V. Rodionov

Southwest State University

Email: aid@icp.ac.ru
Russian Federation, Kursk

S. F. Marenkin

Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; MISIS National University of Science and Technology

Email: aid@icp.ac.ru
Russian Federation, Moscow; Moscow

B. A. Aronzon

Lebedev Physical Institute of the Russian Academy of Sciences

Email: aid@icp.ac.ru
Russian Federation, Moscow

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2. Fig. 1. Images of needle-shaped single-crystal inclusions of MnSb in InSb matrix along (a) and across (b) the MnSb growth axis [001] obtained on a scanning electron microscope

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3. Fig. 2. Field dependences of the magnetisation M measured at the indicated temperatures. Solid lines are approximations described in the text

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4. Fig. 3. Temperature dependences of the magnetic anisotropy constants of the first K1 and second K2 orders. Solid lines are approximations described in the text. The vertical dashed line marks the temperature of the spontaneous spin-reorientation transition TSR. The insets show schematic images of magnetic anisotropy ellipsoids corresponding to the ‘light axis’ (right) and ‘light plane’ (left) type anisotropy

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