Effect of Structural Disordering on the Magnetic, Magneto-Optical and Optical Properties of the Ni2MnIn Heusler Alloy Films

Abstract:

Article Preview

The magnetic, the magneto-optical and the optical properties of Ni2MnIn alloy films with significantly different atomic orders (from nearly single-crystalline to amorphous) were investigated. The crystalline Ni2MnIn alloy films are a ferromagnetic with a Curie temperature of 325 - 330 K, while the amorphous phase is not ferromagnetically-ordered (at least, above 293 K). The diagonal and the off-diagonal components of the dielectric function for the crystalline alloy were experimentally determined for the first time. The nature of interband excitations in the optical spectra of the ordered phase is discussed in terms of the band structures of Ni2MnSn. The analyses of changes in the electron energy structure of Ni2MnIn alloy, caused by the structural disordering, are performed using the results of optical study. An annealing at 750 K for 2 hrs of the amorphous film restores its crystallinity (B2 phase) and also the ferromagnetic order.

Info:

Periodical:

Materials Science Forum (Volumes 480-481)

Edited by:

A. Méndez-Vilas

Pages:

623-628

DOI:

10.4028/www.scientific.net/MSF.480-481.623

Citation:

Y. V. Kudryavtsev et al., "Effect of Structural Disordering on the Magnetic, Magneto-Optical and Optical Properties of the Ni2MnIn Heusler Alloy Films", Materials Science Forum, Vols. 480-481, pp. 623-628, 2005

Online since:

March 2005

Export:

Price:

$35.00

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

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