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A new single phase of composition Bi 3 NbO 7 has been isolated in the binary system Bi 2 O 3 -Nb 2 O 5 . X-ray single crystal diffraction studies have shown that Bi 3 NbO 7 crystallizes in the cubic system, space group Fm3m, with unit-cell parameter a = 5.4788(9) 9. The structure has been determined, and the final reliability index...
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