Room temperature ferromagnetism in diluted magnetic semiconductor Zn1−xCrxTe nanoparticles synthesized by chemical method

Abstract

Nanoparticles of diluted magnetic semiconductor Zn1−xCrxTe with various Cr concentrations were synthesized by a chemical method, and their magnetic properties were investigated. The synthesized nanoparticles show ferromagnetism, and the saturation magnetization increased with increasing Cr concentration in the range from x=0.002tox=0.02. The Zn0.98Cr0.02Te nanoparticles showed ferromagnetism above room temperature, where the Curie temperature TC was estimated to be about 520K. This is much higher than the reported value of TC in the Zn1−xCrxTe thin films.