Features of Formation of the Magnetocaloric Phenomena in Mn1 – tTitAs and Mn1 – xCrxNiGe Systems


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Abstract

The magnetocaloric properties of the systems exhibiting magnetic (paramagnetism (PM)–ferromagnetism (FM)) and structural (hexagonal lattice–orthorhombic lattice) transitions separated (overlapped) in temperature are analyzed in terms of a model of interacting parameters of magnetic and structural orders. It is shown that the magnetocaloric characteristics of the system can increase or decrease during overlapping of the structural (P63/mmcPnma) and magnetic (PM–FM) transitions in the dependence of the character of combination of the low-symmetric orthorhombic (Pnma) and high-symmetric hexagonal (P63/mmc) phases with a ferromagnetic order.

About the authors

V. I. Val’kov

Donetsk Institute for Physics and Engineering named after A.A.Galkin

Author for correspondence.
Email: valkov09@gmail.com
Ukraine, Donetsk, 83114

I. F. Gribanov

Donetsk Institute for Physics and Engineering named after A.A.Galkin

Email: valkov09@gmail.com
Ukraine, Donetsk, 83114

B. M. Todris

Donetsk Institute for Physics and Engineering named after A.A.Galkin

Email: valkov09@gmail.com
Ukraine, Donetsk, 83114

A. V. Golovchan

Donetsk Institute for Physics and Engineering named after A.A.Galkin; Donetsk National University

Email: valkov09@gmail.com
Ukraine, Donetsk, 83114; Donetsk, 83001

V. I. Mitsiuk

Scientific–Practical Materials Research Center

Email: valkov09@gmail.com
Belarus, Minsk, 220072

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