Theoretical Study of Magnetic Properties and Multiple Twin Boundary Motion in Heusler Ni-Mn-X Shape Memory Alloys Using First Principles and Monte Carlo Method

Kostromitin K.I., Buchelnikov Vasiliy, Sokolovskiy Vladimir V., Kamantsev Alexander P., Koledov Victor V., Shavrov Vladimir G., Entel P. Theoretical Study of Magnetic Properties and Multiple Twin Boundary Motion in Heusler Ni-Mn-X Shape Memory Alloys Using First Principles and Monte Carlo Method. Materials Science Forum , 2013 , 738-73. С. 461-467. ISSN 1662-9752

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Аннотация

In this paper we propose a microscopic model for description a twin boundary motion in Ni2MnGa Heusler alloy by means of the ab initio and Monte Carlo calculations. The tetragonal real lattice of martensite with c/a < 1 was used in our simulations. The variants of the low temperature martensite are separated by the twin boundary. The complex Hamiltonian consisting of the Heisenberg model and Blume-Emery-Griffiths one are considered. On the basis of the proposed Hamiltonian the influences of external magnetic field and anisotropy on the twin boundary motion are studied. It is shown that the theoretical picture of the twin boundary motion is analogous with experimental observations.

Тип объекта:	Статья
Авторы на русском. ОБЯЗАТЕЛЬНО ДЛЯ АНГЛОЯЗЫЧНЫХ ПУБЛИКАЦИЙ!:	К.И. Костромитин, В.Д. Бучельников, В.В. Соколовский, А.П. Каманцев, В.В. Коледов, В.Г. Шавров, П. Ентел
Подразделения (можно выбрать несколько, удерживая Ctrl):	192 лаб. магнитных явлений в микроэлектронике
URI:	http://cplire.ru:8080/id/eprint/1647

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