In-situ Lorentz TEM cooling study of magnetic domain configurations in Ni2MnGa

Authors
De Graef, M Willard, MA McHenry, ME Zhu, YM
Citation
M. De Graef et al., In-situ Lorentz TEM cooling study of magnetic domain configurations in Ni2MnGa, IEEE MAGNET, 37(4), 2001, pp. 2663-2665
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
37
Issue
4
Year of publication
2001
Part
1
Pages
2663 - 2665
Database
ISI
SICI code
0018-9464(200107)37:4<2663:ILTCSO>2.0.ZU;2-H
Abstract
Magnetic domain configurations in the ferromagnetic shape memory alloy Ni2M nGa are analyzed by means of Lorentz microscopy and noninterferometric phas e reconstruction methods. Domain structures in the cubic phase consist of c ross-tie walls in the thinnest portions of the foil, and more complex confi gurations in thicker regions. At low temperature, the magnetization configu rations change as the structure transforms martensitically to a tetragonal phase. A simple model for the magnetization changes is proposed.