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High-temperature crystal chemistry of sodium zirconium phosphate (NZP)

  • R. M. Hazen (a1), L. W. Finger (a1), D. K. Agrawal (a2), H. A. McKinstry (a2) and Anthony J. Perrotta (a3)...
Abstract

High-temperature crystal structures of NZP (Na1+xZr2P3−xSixO12) have been determined by x-ray measurements made on single crystals. Thermal expansion of NZP (x = 0.11) parallel to the hexagonal c axis is positive (about 22.4 ⊠ 10−6°C−1 between 25° and 700°C), whereas expansion perpendicular to c is slightly negative (about 5.4 ⊠ 10−6°C−1), resulting in an average volume thermal expansion of 11.8 ⊠ 10−6°C−1. A proposed structural model to interpret this anisotropic thermal expansion of NZP is tested to prove the model's validity. In this model the rotation of the phosphate tetrahedron is coupled to the rotation of the zirconium octahedron. The observed thermal expansions of sodium, zirconium, and phosphorus cation coordination polyhedra are 10.8, 0.00, and −0.23 (all × 10−6°C−1), respectively. The large thermal expansion of the sodium site is offset by rotations in the Zr–P polyhedral framework, thus yielding the low net expansion of NZP.

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1Hagman L. O. and Kierkegaard P. Acta Chem. Scand. 22, 1822 (1968).
2Goodenough J. B. Hong H. Y.-P. and Kafalas J. A. Mater. Res. Bull. 11, 203 (1976).
3Alamo J. and Roy R. Am. Ceram. Soc. 67, C78 (1984).
4Roy R. Agrawal D. K. Alamo J. and Roy R. A. Mater. Res. Bull. 19, 471 (1984).
5Agrawal D. K. and Stubican V. S. Mater. Res. Bull. 20, 99 (1985).
6Alamo J. and Roy R. J. Mater. Sci. 21, 444 (1986).
7Sljukic M. Matkovic B. Prodic B. and Scarnicar S. Croatica Che-mica Acta 39, 145 (1967).
8Alamo J. (private communication).
9Lenain G. E. McKinstry H. A. Alamo J. and Agrawal D. K. J. Mater. Sci. 22, 17 (1987).
10Roy R. Vance E. R. and Alamo J. Mater. Res. Bull. 17, 585 (1982).
11Boilot J. P. Salanie J. P. Desplaches G. and LePotier D. Mater. Res. Bull. 14, 1469 (1969).
12Lenain G. E. McKinstry H. A. Limaye S. and Woodword A. Mater. Res. Bull. 19, 1451 (1984).
13Limaye S. Y. Agrawal D. K. and McKinstry H. A. J. Am. Ceram. Soc. (to be published).
14Qui D. Tran, Capponi J. J. Joubert J. C. and Shannon R. D. J. Solid State Chem. 39, 219 (1981).
15Oota T. and Yamai I. J. Am. Ceram. Soc. 69, 1 (1986).
16Didisheim J. J. and Wuensch B. J. in NBS Reactor, Summary of Activities July 1984 through June 1985, Washington, NBS Tec finical Note 1217, edited by Shorten F. J. (United States Department of Commerce, Washington, DC, 1985), pp. 49.
I7 Hazen R. M. and Finger L. W. Comparative Crystal Chemistry (Wiley, New York, 1982).
18Finger L. W. and King H. E. Am. Mineral. 63, 337 (1978).
19Lehmann M. S. and Larsen F. K. Acta Crystallogr. A 30, 580 (1974).
20Hong H. Y.-P. Mater. Res. Bull. 11, 173 (1976).
21Prewitt C. T. Sueno S. and Papika J. J. Am. Mineral. 61, 1213 (1976).
22Winter J. K. Okamura F. P. and Ghose S. Am. Mineral. 64, 409 (1981).
23Peacor D. R. Am. Mineral. 58, 676 (1973).
24Busing W. R. and Levy H. A. Acta Crystallogr. 17, 142 (1964).
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Journal of Materials Research
  • ISSN: 0884-2914
  • EISSN: 2044-5326
  • URL: /core/journals/journal-of-materials-research
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