Magneto-optical properties of CdMnTe single crystals

Author

Hwang, Younghun ; Um, Youngho

Author_Institution

Basic Science Research Institute, University of Ulsan, Ulsan Korea

fYear

2012

fDate

18-21 Sept. 2012

Firstpage

1

Lastpage

3

Abstract

We describe magneto-optical properties of ternary Cd_1-xMn_xTe crystals grown by the Bridgman method. This material crystallizes in the zinc-blende structure for values of x<;0.82. The band-gap energy was depended on Mn mole fraction x linearly and increased with decreasing temperature. The increase of the energy gap with increasing x may be due to a decrease in the lattice constant. Faraday rotation as a function of photon energy with various Mn compositions for CdMnTe in the temperature range of 10-300 K has been measured. The Faraday rotation was increased as the photon energy increased near to that of the fundamental band gap. Verdet constant becomes larger since the effect of the sp-d exchange interaction is enhanced as the temperature is lowered.

Keywords

Faraday effect; II-VI semiconductors; cadmium compounds; crystal growth from melt; crystallisation; energy gap; exchange interactions (electron); lattice constants; manganese compounds; semiconductor growth; semimagnetic semiconductors; wide band gap semiconductors; Bridgman method; Cd_1-xMn_xTe; Faraday rotation; Verdet constant; band-gap energy; crystallization; lattice constant; magneto-optical properties; mole fraction; photon energy; single crystals; sp-d exchange interaction; temperature 10 K to 300 K; zinc-blende structure; Absorption; Crystals; Faraday effect; Magnetic semiconductors; Manganese; Photonic band gap; Temperature measurement; Cd1−xMnxTe; Faraday rotation; Verdet constant; sp-d exchange interaction;

fLanguage

English

Publisher

ieee

Conference_Titel

Strategic Technology (IFOST), 2012 7th International Forum on

Conference_Location

Tomsk

Print_ISBN

978-1-4673-1772-6

Type

conf

DOI

10.1109/IFOST.2012.6357795

Filename

6357795