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

Yuri V. Kudryavtsev; Young Pak Lee; Ni Na Lee; Mei Dong Huang

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

Paper Titles

Electromagnetic Wave Absorption Behavior of NiZn-Ferrite Prepared via Hydrothermal Method
p.595

A Comparison of Quantum Correction Models for Nanoscale MOS Structures under Inversion Conditions
p.603

Thermal Conductivity and Acoustic Performance of Volcanic Pumice Based Composites
p.611

Computer Calculations of the Thermally-Induced Magnetic and Electronic Properties of the Rare Earth Compounds RERu₂Si₂
p.617

Effect of Structural Disordering on the Magnetic, Magneto-Optical and Optical Properties of the Ni₂MnIn Heusler Alloy Films
p.623

Frequency-Diffusion Characteristics of Silicic Acid Gels
p.629

Success of the Z-Matrix Representation in Monte-Carlo Structural Determination of Stimulant Drugs (Caffeine and Nicotine) from their X-Ray Powder Diffraction Pattern
p.635

Design and Manufacturing Process of Skull Defect Prosthesis
p.641

Pyroelectric and Photoacustic Properties of Pb_0.88(Ln)_0.08Ti_0.98 Mn_0.02 O₃ (Ln = La, Sm, Eu) Piezoceramics for Biomedical Use
p.645

HomeMaterials Science ForumMaterials Science Forum Vols. 480-481Effect of Structural Disordering on the Magnetic,...

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

Abstract:

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.