Temperature Dependence of Lattice Parameters in Martensite and Effect of the External Magnetic Field on Martensite Structure in Ni2MnGa Studied In-Situ with Neutron Diffraction

Abstract:

Article Preview

The crystal structure of Ni1.99Mn1.14Ga0.87 single-crystal that exhibits large magnetic field induced strain in the martensitic phase is studied by neutron diffraction within temperature range 300K-4K. The 5-layered modulated structure is observed within the whole temperature interval and no another martensitic transformations occur. The anisotropic change of the martensite lattice parameters during cooling from 300K down to 4K is found. The combined change in the a- and c-lattice parameters affects change of the (c/a) ratio in martensite with cooling down by 2.32%. Redistribution of twin martensitic variants in the external magnetic field is studied in-situ at temperatures 98K-296K.

Info:

Periodical:

Materials Science Forum (Volumes 443-444)

Edited by:

Yvonne Andersson, Eric J. Mittemeijer and Udo Welzel

Pages:

397-400

DOI:

10.4028/www.scientific.net/MSF.443-444.397

Citation:

N. Glavatska et al., "Temperature Dependence of Lattice Parameters in Martensite and Effect of the External Magnetic Field on Martensite Structure in Ni2MnGa Studied In-Situ with Neutron Diffraction", Materials Science Forum, Vols. 443-444, pp. 397-400, 2004

Online since:

January 2004

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.