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JOURNAL OF APPLIED PHYSICS
Volume 103, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2885108
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We report a systematic investigation on the structural and magnetic properties of molecular-beam epitaxial growth of CrTe thin films with different layer thicknesses and Cr/Te flux ratios. A phase diagram of the growth parameters is established based on the detailed analyses of the reflection high-energy electron diffraction patterns, atomic force microscopy, and magnetization. Our high-resolution transmission electron microscopy results show that under appropriate growth conditions, a metastable zinc-blende (ZB) phase of CrTe film can be achieved with a nominal thickness of 5 nm. The magnetic properties of ZB CrTe exhibit a strong in-plane anisotropy with an easy axis along the [001] direction and hard axes along the [011] and [0 (1) over bar1] directions. Correspondingly, the uniaxial (K-U) and cubic (K-C) anisotropy constants are obtained through the fitting of the [011] hard-axis direction. The temperature dependence of the remanent magnetization indicates the T-C similar to 100 K of ZB CrTe is attained. (9) 2008 American Institute of Physics.
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