High-Pressure Phase Transformation Of Nanometric Znsb Prepared By Mechanical Alloying
JOURNAL OF APPLIED PHYSICS(2009)
摘要
Nanometric orthorhombic ZnSb was prepared by mechanical alloying and its structural stability was studied as a function of pressure. The changes were followed by Raman and x-ray absorption spectroscopy. Between 11.0 and 14.6 GPa, we observed an irreversible phase transformation from the orthorhombic phase to a hexagonal hP1 phase. A similar transformation had been previously observed at 7 GPa for bulk ZnSb. The difference in the phase transformation pressures is attributed to an interfacial component of the nanometric structure.
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关键词
mechanical alloying, nanostructured materials, phase transformations, Raman spectroscopy, X-ray absorption, zinc compounds
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