Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-23T12:34:24.580Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  31 January 2011

R. M. Hazen ,
L. W. Finger ,
D. K. Agrawal ,
H. A. McKinstry  and
Anthony J. Perrotta
R. M. Hazen
Affiliation:
Geophysical Laboratory, Carnegie Institution of Washington, 2801 Upton Street, N. W., Washington, DC 20008
L. W. Finger
Affiliation:
Geophysical Laboratory, Carnegie Institution of Washington, 2801 Upton Street, N. W., Washington, DC 20008
D. K. Agrawal
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
H. A. McKinstry
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Anthony J. Perrotta
Affiliation:
Alcoa Technical Center, Alcoa Center, Pennsylvania 15069
Get access

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.

Type
Articles
Information
Journal of Materials Research , Volume 2 , Issue 3 , June 1987 , pp. 329 - 337
Copyright
Copyright © Materials Research Society 1987

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Hagman, L. O. and Kierkegaard, P.Acta Chem. Scand. 22, 1822 (1968).Google Scholar
2Goodenough, J. B.Hong, H. Y.-P. and Kafalas, J. A.Mater. Res. Bull. 11, 203 (1976).Google Scholar
3Alamo, J. and Roy, R.Am. Ceram. Soc. 67, C78 (1984).Google Scholar
4Roy, R.Agrawal, D. K.Alamo, J. and Roy, R. A.Mater. Res. Bull. 19, 471 (1984).Google Scholar
5Agrawal, D. K. and Stubican, V. S.Mater. Res. Bull. 20, 99 (1985).Google Scholar
6Alamo, J. and Roy, R.J. Mater. Sci. 21, 444 (1986).CrossRefGoogle Scholar
7Sljukic, M.Matkovic, B.Prodic, B. and Scarnicar, S.Croatica Che-mica Acta 39, 145 (1967).Google Scholar
8Alamo, J. (private communication).Google Scholar
9Lenain, G. E.McKinstry, H. A.Alamo, J. and Agrawal, D. K.J. Mater. Sci. 22, 17 (1987).CrossRefGoogle Scholar
10Roy, R.Vance, E. R. and Alamo, J.Mater. Res. Bull. 17, 585 (1982).CrossRefGoogle Scholar
11Boilot, J. P.Salanie, J. P.Desplaches, G. and LePotier, D.Mater. Res. Bull. 14, 1469 (1969).Google Scholar
12Lenain, G. E.McKinstry, H. A.Limaye, S. and Woodword, A.Mater. Res. Bull. 19, 1451 (1984).CrossRefGoogle Scholar
13Limaye, S. Y.Agrawal, D. K. and McKinstry, H. A. J. Am. Ceram. Soc. (to be published).Google Scholar
14Qui, D. Tran, Capponi, J. J.Joubert, J. C. and Shannon, R. D.J. Solid State Chem. 39, 219 (1981).CrossRefGoogle Scholar
15Oota, T. and Yamai, I.J. Am. Ceram. Soc. 69, 1 (1986).CrossRefGoogle Scholar
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. 4–9.Google Scholar
I7 Hazen, R. M. and Finger, L. W.Comparative Crystal Chemistry (Wiley, New York, 1982).Google Scholar
18Finger, L. W. and King, H. E.Am. Mineral. 63, 337 (1978).Google Scholar
19Lehmann, M. S. and Larsen, F. K.Acta Crystallogr. A 30, 580 (1974).Google Scholar
20Hong, H. Y.-P.Mater. Res. Bull. 11, 173 (1976).Google Scholar
21Prewitt, C. T.Sueno, S. and Papika, J. J.Am. Mineral. 61, 1213 (1976).Google Scholar
22Winter, J. K.Okamura, F. P. and Ghose, S.Am. Mineral. 64, 409 (1981).Google Scholar
23Peacor, D. R.Am. Mineral. 58, 676 (1973).Google Scholar
24Busing, W. R. and Levy, H. A.Acta Crystallogr. 17, 142 (1964).CrossRefGoogle Scholar