Abstract
We investigated the effect of Zn/Te flux ratio on magnetic properties of a II-VI diluted magnetic semiconductor (DMS) Zn1-xCrxTe. Zn1-xCrxTe films were grown on GaAs(001) using a molecular beam epitaxy method and changing the Zn/Te flux ratio. In all the films, single phase of DMS Zn1-xCrxTe was confirmed using magnetic circular dichroism measurements. We found that ferromagnetism appears in a limited range of the Zn/Te flux ratio. The magnetic properties of DMS Zn1-xCrxTe depend sensitively on not only the Cr concentration but also the Zn/Te flux ratio.