| Abstract: | Zirconium orthophosphates with different alkali cations MZr2(PO4 3, M2Zr(PO4)2, and M5Zr(PO44)3, where M is Na, K, Rb, Cs, were synthesized and studied by IR spectroscopy. X-ray diffraction, and 40K radiometric analysis. It is confirmed that MZr2(PO4 3 (M = Na, K, Rb, Cs) exist as rhombohedral phases crystallizing as NaZr2(PO4 3) (NZP) structures. For Na5Zr(PO4 3 it is shown that an NZP phase with a monoclinic superstructure is formed as a result of statistical distribution of Na and Zr in the ZrO6 octahedm and ordered distribution of sodium atoms in the interstices of the channels. Formation of K2Zr(PO4)2 and K5Zr(PO4)3 phases with NZP structures is shown to be possible. Translated from Zhumal Struktumoi Khimii, Vol. 41, No. 1, pp. 74-79, January-February, 2000. |
