High pressure Raman spectroscopic study of structural phase transition in samarium oxide
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High pressure Raman spectroscopic study of Sm2O3 poly crystal was performed up to 21.0 GPa and room temperature using a diamond anvil cell. Pressure induced phase transition was observed at 2.6 GPa in the pressure increasing process. This phase transition corresponds to the monoclinic B type phase → the hexagonal A type transformation. The A type phase was stable up to 21.0 GPa. In the pressure release process, the A type phase was stable above 1.8 GPa, and was completely reverted to the B type phase at 1.1 GPa. The phase transition was confirmed to be reversible with a hysteresis of approximately 1.0 GPa.
KeywordsSamarium Gd2O3 Diamond Anvil Cell Phase Transition Pressure Raman Spectroscopic Study
The authors thank S. Oguchi for his assistance in experiments.
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