Paper Title:
Electrical and Optical Properties of X2YZ (X = Co, Fe; Y = Cr, Mn, Ti; Z = Ga, Al, Si) Heusler Alloys
  Abstract

We studied the electrical and optical properties of X2YZ (X = Co, Fe; Y = Cr, Mn, Ti; Z = Ga, Al, Si) Heusler alloys. We showed that the electrical and optical properties of Co2TiAl and Fe2TiAl are typical of metals. An abnormal behavior of the resistivity and the optical properties in the IR range of the other alloys was observed, i.e., the resistivity exhibits a semiconductor-like behavior and the optical conductivity has no contribution from the intraband absorption of the conduction electrons. The experimental data analysis, based on existing band calculations, allowed us to conclude that the anomalous behavior of their properties is determined by electronic states near to and at the Fermi level. The electronic states in the subband with spin up give the main contribution to the interband transitions in the IR range, but they practically do not contribute to the static conductivity (resistivity). There are almost no charge carries in the other electronic subband (with spin down), and hence, the interband transitions occur only at the energies above the semiconductor gap values.

  Info
Periodical
Solid State Phenomena (Volumes 168-169)
Main Theme
Edited by
V. Ustinov
Pages
545-548
DOI
10.4028/www.scientific.net/SSP.168-169.545
Citation
K.A. Fomina, V. Marchenkov, E.I. Shreder, H.W. Weber, "Electrical and Optical Properties of X2YZ (X = Co, Fe; Y = Cr, Mn, Ti; Z = Ga, Al, Si) Heusler Alloys", Solid State Phenomena, Vols. 168-169, pp. 545-548, 2011
Online since
December 2010
Export
Price
$32.00
Share

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

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

Authors: M.Y. Nurulhuda, M.R. Sahar
Chapter 8: Technology of Glass
Abstract:A series of tellurite glass based on composition (89.6-x)TeO2-10MgO-xSm2O3-0.4AgCl where 0.2x1.0 have...
460
Authors: Ke Lan Yan, Run Hua Fan, Min Chen, Kai Sun, Xu Ai Wang, Qing Hou, Chuan Bing Cheng
Abstract:The phase structure, and electrical and magnetic properties of La0.7Sr0.3MnO3 (LSMO)-x Ag (x...
182
Authors: Le Kong, Jin Xiang Deng
Symposium E: Materials in Microelectronic and Optoelectronic Industry
Abstract:To find the optical properties of Cu2ZnSnS4 (CZTS) absorber in two crystal structures (kesterite and stannite) which...
80
Authors: Svetlana Svitasheva
Chapter 2: Nanomaterials and Nanotechnologies
Abstract:Ellipsometry is power instrument for testing several properties of thin films. Advantage and attractiveness of these optical studies consist...
146