A. I. Orlova

Synthesis and crystal structure of NZP-type thorium-zirconium phosphate.

Microcrystals of Th(1/4)Zr(2)(PO(4))(3) were synthesized by thermal treatment (900 degrees C) of the material obtained using sol-gel technology (including organic complex formation and etherification). Their structure [hexagonal, P3c, a = b = 8.7311(4) A, c = 23.309(2) A] includes the three-dimensional [Zr(2)(PO(4))(3)](-) NASICON-type network and extraframework 6-fold-coordinated thorium(IV) cations.

Investigation of zirconium phosphate Zr3(PO4)4 during heating

AbstractZirconium phosphate Zr3(PO4)4 has been synthesized by the sol-gel technique and investigated using X-ray powder diffraction, IR spectroscopy, and differential scanning calorimetry. It has been established that the symmetry of the unit cell, R

Synthesis and structural study of Rb2FeZr(PO4)3 phosphate with langbeinite structure

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Structure Refinement of Cadmium Cerium(IV) Phosphate Cd{sub 0.5}Ce{sub 2}(PO{sub 4}){sub 3}

c, which is characteristic of the NaZr2(PO4)3 (NZP) family, is lowered to P

Thermal expansion of phosphates with the NaZr2(PO4)3 structure containing lanthanides and zirconium: R0.33Zr2(PO4)3 (R = Nd, Eu, Er) and Er0.33(1–x) Zr0.25xZr2(PO4)3

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Phosphorus-containing compounds of pollucite structure and radiochemical problems

c. The behavior of the zirconium phosphate during heating has been examined using high-temperature X-ray diffraction at temperatures ranging from 25 to 575°C. It has been revealed that the structure of the zirconium phosphate is hardly subjected to expansion due to heating in the temperature ranges 25–125°C (αa < 1 × 10−6 K−1, αc < 1 × 10−6 K−1, Δα < 1 × 10−6 K−1) and 325–575°C (αa = −1.4 × 10−6 K−1, αc < 1 × 10−6 K−1, Δα < −2.4 × 10−6 K−1). In the temperature range 125–325°C, the synthesized compound undergoes a second-order phase transition (upon heating), which is accompanied by the contraction of the structure along all crystallographic directions. Upon cooling in the range from 75 to 25°C, the phase transition is accompanied by the expansion of the structure.