Magnetic and magneto-optical studies on Zn1−x
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- 作者：D. Soundararajan ; D. Mangalaraj ; D. Nataraj ; L. Dorosinskii ; J. Santoyo-Salazar ; M.J. Riley
- 关键词：ZnTe ; Cr film ; Magnetic domains ; M vs. H curve ; Magneto-optical study
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2009
- 出版时间：December 2009
- 年：2009
- 卷：321
- 期：24
- 页码：4108-4114
- 全文大小：443 K
文摘
Zn1−xCrxTe (x=0.05) films were prepared by thermal evaporation onto glass substrates. X-ray diffraction (XRD) was used to determine the crystalline quality of the ZnTe:Cr film. Magnetic force microscopy (MFM) investigation has shown a non-uniform distribution of magnetic domains with an average size of 4 nm at room temperature. SQUID measurements have further shown that the non-uniform distribution of domains does not affect the room temperature ferromagnetism of this material. Electron spin resonance spectroscopy (ESR) was done to determine the Cr valence state in the ZnTe lattice. Magnetic circular dichroism (MCD) analysis was used to confirm the ZnCrTe phase contributing to the ferromagnetic behavior.