The role and position of iron in 0.8CaZrO3-0.2CaFe2O4

Jacek Szczerba 1 , Edyta Śnieżek 1 , Paweł Stoch 1 , Ryszard Prorok 1  and Ilona Jastrzębska 1
  • 1 Department of Ceramics and Refractories, Faculty of Materials Science and Ceramics, AGH – University of Science and Technology, 30 A. Mickiewicza Ave., 30-059 Kraków, Poland, Tel.: +48 12 617 5139, Fax: +48 12 633 4630


The aim of the study was to characterize the 0.8CaZrO3-0.2CaFe2O4 composite structure with particular emphasis on the role and position of iron in the function of sintering temperature. The paper presents the results of 57Fe Mössbauer effect at room temperature. It was found that the increase of sintering temperature causes an increase in the amount of incorporated iron ions in the CaZrO3-crystal structure. Based on Mössbauer spectroscopy analysis, it was found that three different environments of Fe3+ ions were observed in the obtained materials. Two of them corresponded to CaFe2O4 phase and one was associated with the substitution of Zr4+ by Fe3+ in the CaZrO3 structure.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • 1. Dravid, V. P., Sung, C. M., Notis, M. R., & Lyman, C. E. (1989). Crystal symmetry and coherent twin structure of calcium zirconate. Acta Crystallogr. Sect. B-Struct. Sci., 45(3), 218–227. DOI: 10.1107/S0108768189000856.

  • 2. Rossa, N. L., & Chaplin, T. D. (2003). Compressibility of CaZrO3 perovskite: Comparison with Ca-oxide perovskites. J. Solid State Chem., 172(1), 123–126. DOI: 10.1016/S0022-4596(02)00166-4.

  • 3. Stoch, P., Szczerba, J., Lis, J., Madej, D., & Pędzich, Z. (2012). Crystal structure and ab initio calculations of CaZrO3. J. Eur. Ceram. Soc., 32(3), 665–670. DOI: 10.1016/j.jeurceramsoc.2011.10.011.

  • 4. Prasanth, C. S., Padma Kumar, H., Pazhani, R., Solomon, S., & Thomas, J. K. (2008). Synthesis, characterization and microwave dielectric properties of nanocrystalline CaZrO3 ceramics. J. Alloy. Compd., 464(1/2), 306–309. DOI: 10.1016/j.jallcom.2007.09.098.

  • 5. Pollet, M., Marinel, S., & Desgardin, G. (2004). CaZrO3, a Ni-co-sinterable dielectric material for base metal-multilayer ceramic capacitor applications. J. Eur. Ceram. Soc., 24(1), 119–127. DOI: 10.1016/S0955-2219(03)00122-5.

  • 6. Levin, I., Amos, T. B., Bell, S. M., Farber, L., Vanderah, T. A., Roth, R. S., & Toby, B. H. (2003). Phase equlibra, crystal structures, and dielectric anomaly in the BaZrO3-CaZrO3 system. J. Solid State Chem., 175, 170–181. DOI: 10.1016/S0022-4596(03)00220-2.

  • 7. Serena, S., Sainz, M. A., & Caballero, A. (2009). The system Clinker-MgO-CaZrO3 and its application to the corrosion behavior of CaZrO3/MgO refractory matrix by clinker. J. Eur. Ceram. Soc., 29(11), 2199–2209. DOI: 10.1016/j.jeurceramsoc.2009.01.015.

  • 8. Dudek, M., & Bućko, M. M. (2003). Electrical properties of stoichiometric and non-stoichiometric calcium zirconate. Solid State Ion., 157, 183–187.

  • 9. Dudek, M., & Drożdż-Cieśla, E. (2009). Some observations on synthesis and electrolytic properties of nonstoichiometric calcium zirconate. J. Alloy. Compd., 457, 846–854. DOI: 10.1016/j.jallcom.2008.08.020.

  • 10. Hwang, S. C., & Choi, G. M. (2006). The effect of cation nonstoichiometry on the electrical conductivity of acceptor-doped CaZrO3. Solid State Ion., 177, 3099–3103. DOI: 10.1016/j.ssi.2006.08.002.

  • 11. Smith, K. L., Colella, M., Cooper, R., & Vance, E. R. (2003). Measured displacement energies of oxygen ions in titanates and zirconates. J. Nucl. Mater., 321(1), 19–28. DOI: 10.1016/S0022-3115(03)00197-1.

  • 12. Muller-Buschbaum, H. K. (2003). The crystal chemistry of AM2O4 oxometallates. J. Alloy. Compd., 349(1/2), 49–104.

  • 13. Muller, O., & Roy, R. (1974). The major ternary structural families. New York: Springer.

  • 14. Rietveld, H. M. (1969). A profile refinement method for nuclear and magnetic structures. J. Appl. Cryst., 2, 65–71. DOI: 10.1107/S0021889869006558.

  • 15. Rodriguez-Carvajal, J. (1993). Recent advances in magnetic structure determination by neutron powder. Diffr. Phys. B, 192(1/2), 55–69. DOI: 10.1016/0921-4526(93)90108-I.

  • 16. Shannon, R. D. (1976). Revise effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallogr. Sect. A, 32, 751–767. DOI: 10.1107/S0567739476001551.

  • 17. Tsipis, E. V., Pivak, Y. V., Waerenborgh, J. C., Kolotygin, V. A., Viskup, A. P., & Khortan, V. V. (2007). Oxygen ionic conductivity, Mössbauer spectra and thermal expansion of CaFe2O4-δ. Solid State Ion., 178(25/26), 1428–1436. DOI: 10.1016/j.ssi.2007.09.003.


Journal + Issues