Crystal chemistry of the NaZr2(PO4)3, NZP or CTP,structure family |
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| Authors: | James Alamo Rustum Roy |
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| Affiliation: | (1) Materials Research Laboratory, The Pennsylvania State University, 16802 University Park, Pennsylvania, USA;(2) Present address: Department of Inorganic Chemistry, College of Chemistry, Valencia University, Burjasot, Spain |
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| Abstract: | The NaZr2(PO4)3 type structure (abbreviated as NZP or CTP, CaTi4(PO4)6), has emerged as a new family, which has extraordinary technological utility in three fields: fast-ion conductors, radwaste solidification and zero expansion ceramics. NZP or CTP is formed by an extraordinary range of discrete compositions and crystalline solutions. In this paper these compositions are classified according to their crystal chemical substitution scheme, and some uncommon trends in the systematic variation of their lattice parameters are shown. Some of the major trends are explained by correlation with the rotation of polyhedra in the structure. |
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