Phase Transition and Negative Thermal Ex
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T.G. Amos; A. Yokochi; A.W. Sleight
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Article
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1998
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Elsevier Science
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English
β 304 KB
The structure of tetragonal NbOPO 4 has been studied from room temperature to 500°°C by X-ray powder diffraction and to 327°°C by neutron powder diffraction. Rietveld refinements were conducted on neutron data collected at 25, 100, 175, 200, 225, 275, and 327°°C. A phase transition was found at abou