Table of Contents
Textures and Microstructures
Volume 32 (1999), Issue 1-4, Pages 303-308

Thermal Expansion Anomalies at Spin-Reorientation in SmFe2: the Role of the Magnetic Texture

Institute of Metal Physics, Ural Branch of RAS, Kovalevskaya 18, Ekaterinburg 620219, Russia

Accepted 28 September 1997

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Temperature dependency of the thermal expansion coefficient (TEC) was studied at 4.2– 300K in SmFe2 ferromagnetic compound having spin-reorientation temperature near 190 K. We have found a strong effect of the magnetic texture on TEC of this high magnetostrictive compound at the spin-reorientation phase transition from [1 1] to [1 10] easy direction. The substantial role in the texture formation is expected to belong to atoms of hydrogen that are always present in a small amount in the compounds of such type.