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- W1963556103 abstract "In situ high-pressure Raman spectroscopic studies on $mathrm{Zr}{mathrm{V}}_{2}{mathrm{O}}_{7}$ suggest growth of disorder in the high-pressure orthorhombic phase, inferred from the excessive broadening of Raman peaks, and the sample gradually turns amorphous above $4phantom{rule{0.3em}{0ex}}mathrm{GPa}$. The samples pressure cycled from $10phantom{rule{0.3em}{0ex}}mathrm{GPa}$ exhibit irreversible amorphization. On the other hand, the spectrum of the sample pressure cycled from $4phantom{rule{0.3em}{0ex}}mathrm{GPa}$ is found to have all the characteristic peaks of ${mathrm{V}}_{2}{mathrm{O}}_{5}$ indicating a possible decomposition of the compound into a mixture of simple oxides. A partial decomposition is indeed confirmed from the x-ray-diffraction pattern of the recovered sample. A large decrease of the intensity of the $mathrm{V}{mathrm{O}}_{4}$ tetrahedral stretching modes is consistent with the possible coordination change of vanadium, from fourfold in $mathrm{Zr}{mathrm{V}}_{2}{mathrm{O}}_{7}$ to fivefold in ${mathrm{V}}_{2}{mathrm{O}}_{5}$. Nucleation of nano-/poorly crystallized grains of the daughter phase even at ambient temperature is understood as due to the existence of the fivefold coordinated crystalline phase, ${mathrm{V}}_{2}{mathrm{O}}_{5}$." @default.
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- W1963556103 date "2007-05-30" @default.
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- W1963556103 title "Pressure-induced amorphization and decomposition in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi mathvariant=normal>Zr</mml:mi><mml:msub><mml:mi mathvariant=normal>V</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>O</mml:mi><mml:mn>7</mml:mn></mml:msub></mml:mrow></mml:math>: A Raman spectroscopic study" @default.
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- W1963556103 doi "https://doi.org/10.1103/physrevb.75.174119" @default.
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