Defect structure and defect-induced expansion of perovskite oxides / Zuev A.Y., Tsvetkov D.S. // Perovskite: Crystallography, Chemistry and Catalytic Performance. - 2013. - V. , l. . - P. 141-165.

ISSN:

нет данных

Type:

Book Chapter

Abstract:

Perovskites based upon substituted LaBO3-δ, where B is a 3d transition metal, are the state-of-the-art materials for a variety of different high and intermediate temperature devices such as solid oxide fuel cells (SOFCs) and mixed ionic and electronic conducting (MIEC) membranes. The unique feature of the oxides is their ability to undergo both thermal expansion and that induced by the defects of oxygen nonstoichiometry in the oxide lattice. The latter is chemical or defect-induced expansion. There are different possible mechanisms to explain the isothermal expansion observed. If formation of oxygen vacancies in oxide lattice at low oxygen partial pressures/high temperature is accompanied by the reduction of 3d metal then one of them may be based on a change of mean size of the reducible cation due to substitution of "large" B(n-1)+ for smaller Bn+ as a result of the reduction. The priority purpose of this chapter is to explain the defect-induced expansion for substituted chromites, manganites and cobaltites on the basis of their defect structure using both the experimental data available in the literature and those recently obtained by the authors. Theoretical values of the chemical expansion were computed on the basis of a relative change of the mean ionic radius. In order to enable such computation modeling analysis of the defect structure of the perovskites studied was carried out. As a result, most adequate models were found. The experimental data and those calculated on the basis of model proposed were shown to be in good agreement for all oxides investigated. Change of a spin state of cobalt in different oxidation states was found to contribute significantly in an expansion value of cobalt containing perovskites. © 2013 by Nova Science Publishers, Inc. All rights reserved.

Author keywords:

Index keywords:

нет данных

DOI:

нет данных

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891980873&partnerID=40&md5=e9f8fe96e33214d34cbf1461a5965381

Соавторы в МНС:

—

Другие поля

Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891980873&partnerID=40&md5=e9f8fe96e33214d34cbf1461a5965381
Affiliations	Ural Federal University, Department of Chemistry, Ekaterinburg, Russian Federation
References	Strelkow, P.G., (1937) Physik. Zeita. Sowjetunion, 12, p. 73; Mott, Gurney, Electronic Processes in Ionic Crystals (1948), Clarendon Press, Oxford; Seitz, F., (1939) Phys. Rev., 56, p. 1063; Lawson, A.W., (1950) Phys. Rev., 78, p. 185; Adler, S.B., (2001) J. Am. Ceram. Soc., 84, p. 2117; Chen, X., Yu, J., Adler, S.B., (2005) Chem. Mater., 17, p. 4537; Cherepanov, V.A., Petrov, A.N., Zuev, A.Y., (2009) Solid State Electrochemistry I: Fundamentals and their Applications, p. 43. , in V. Kharton, Editor, Wiley-VCH, Weinheim; Bishop, S.R., Duncan, K.L., Wachsman, E.D., (2010) J. Am. Ceram. Soc., 93, p. 4115; Lankhorst, M.H.R., Bouwmeester, H.J.M., Verweij, H., (1997) J. Solid State Chem., 133, p. 555; Mizusaki, J., Mima, Y., Yamauchi, S., Fueki, K., (1989) J. Solid State Chem., 80, p. 102; Hjalmarsson, P., Søgaard, M., Mogensen, M., (2010) J. Solid State Chem., 183, p. 1853; Zuev, Y., Tsvetkov, D.S., (2010) Solid State Ionics, 181, p. 557; Zuev, A.Y., Petrov, A.N., Vylkov, A.I., Tsvetkov, D.S., (2007) J. Mater. Sci., 42, p. 1901; Zuev, A.Y., Vylkov, A.I., Petrov, A.N., Tsvetkov, D.S., (2008) Solid State Ionics, 179, p. 1876; Hilpert, K., Steinbrech, R.W., Boroomand, F., (2003) J. Eur. Ceram. Soc., 23, p. 3009; Boroomand, F., Wessel, E., Bausinger, H., Hilpert, K., (2000) Solid State Ionics, 129, p. 251; Singheiser, Z.L., Hilpert, K., (2002) Solid State Ionics, 147, p. 1; Shannon, R.D., (1976) Acta Crystallogr, A32, p. 751; Baskar, D., Adler, S.B., (2008) Chem. Mater., 20, p. 2624; Asai, K., Yoneda, A., Yokokura, O., Tranquauda, J.M., Shirane, G., Kohn, K., (1998) J. Phys. Soc. Japan, 67, p. 290
Correspondence Address	Zuev, A.Y.; Ural Federal University, Department of Chemistry, Ekaterinburg, Russian Federation; email: Andrew.Zuev@usu.ru
Publisher	Nova Science Publishers, Inc.
ISBN	9781624178009
Language of Original Document	English
Abbreviated Source Title	Perovskite: Crystallography, Chem. and Catalytic Perform.
Source	Scopus