Cover Image

Crystal structure and imperfection of the perovskite-like proton conductor Ba4Ca2Nb2O11

I. E. Animitsa, N. A. Kochetova


The crystal structure complex oxide Ba4Ca2Nb2O1 inanhydrous and hydrated forms was studied by the method of neutron diffraction, the preferred localization of protons were set. The hydration process with temperature variation and the partial pressure of water vapor was studied. It is established that the crystallographic non-equivalence OH-groups in the structure determines their different thermal stability. The quasi-chemical approach was proposed that describes the formation of proton defects in oxides with structural disordering.


neutron diffraction; quasichemical approach; high temperature proton conductors (HTPC)

Full Text:



Norby T. Ceramic proton and mixed proton-electron conductors in membranes for energy conversion applications. J Chem Eng Jpn. 2007;40(13):1166-71. doi:10.1252/jcej.07we250

Reijers R, Haije WG. Literature review on high temperature proton conducting materials [Internet]. Petten (the Netherlands): Energy research Centre of the Netherlands; 2008. 58 p. Available from:

Phair JW, Badwal SPS. Review of proton conductors for hydrogen separation. Ionics. 2006;12(2):103-15. doi:10.1007/s11581-006-0016-4

Kreuer KD. Proton-conducting oxides. Annu Rev Mater Res. 2003;33:333-59. doi:10.1146/annurev.matsci.33.022802.091825

Animitsa I. Perovskites: Structure, Properties and Uses. New York: Nova Science Publishers; 2010. Chapter, Double Perovskites with Structure-Disordered Oxygen Sublattice as High-Temperature Proton Conductors. p. 501-24.

Rodriguez-Carvajal J. Recent Developments of the Program FULLPROF. Newsletter in Commission on Powder Diffraction (IUCr) [Internet]. 2001;26:12-9. Available from:

Animitsa I, Neiman A, Kochetova N, Melekh B, Sharafutdinov A. Proton and Oxygen-ion conductivity of Ba4Ca2Nb2O11. Solid State Ionics. 2003;162-3:63-71. doi:10.1016/S0167-2738(03)00246-7

Pal'guev SF. Vysokotemperaturnye protonnye tverdye elektrolity [High-temperature solid state proton conductors]. Ekaterinburg (Russia): UrO RAN; 1998. 82 p. Russian.

Smyth DM. Defects and order in perovskite-related oxides. Annu Rev Mater Sci. 1985;15:329-57. doi:10.1146/


Copyright (c) 2016 I. E. Animitsa, N. A. Kochetova

© Chimica Techno Acta, 2014-2021
ISSN 2411-1414 (Online)

Scopus logo WorldCat logo DOAJ logo CAS logo BASE logo eLibrary logo