Crystal structure and oxygen content of the double perovskites GdBaCo 2-xFexO6-δ / Tsvetkov D.S., Ivanov I.L., Zuev A.Y. // Journal of Solid State Chemistry. - 2013. - V. 199, l. . - P. 154-159.

ISSN:

00224596

Type:

Article

Abstract:

The iron solubility limit, x, in GdBaCo2-xFexO 6-δ determined by means of X-ray diffraction was found to be close to 0.65 in air. The crystal structure changes of the double perovskites GdBaCo2-xFexO6-δ (x=0-0.6) were studied by means of in situ X-ray diffraction in temperature range from 25 to 900 °C in air. The oxygen content, 6-δ, was determined for these double perovskites in air as a function of temperature by means of thermogravimetric technique in range 25≤T, °C≤ 1100. The Pmmm-P4/mmm structure transition was found to occur in GdBaCo2-xFexO 6-δ (0≤x≤0.4) with increasing temperature. This transition is observed at the same temperature for the compositions with 0≤x≤0.1 while the transition temperature reaches maximum for x=0.2 and that decreases linearly with further iron increase. The double perovskite GdBaCo1.4Fe0.6O6-δ was shown to have the tetragonal P4/mmm structure at room temperature. The P4/mmm-Pmmm structure transition occurs at temperature as low as 170 °C for this double perovskite while reverse one is already observed at 290 °C in air. The Pmmm-P4/mmm structure transition was found to be strongly related to the oxygen content for the undoped and slightly doped (x≤0.2) double perovskites while there is no such relation for the double perovskites enriched by iron (x≥0.2). © 2012 Elsevier Inc. All rights reserved.

Author keywords:

Double perovskite; Oxygen content; Structure transition

Index keywords:

Double perovskites; Increasing temperatures; Iron solubilities; Oxygen content; Room temperature; Situ x-ray diffraction; Structure transitions; Temperature range; Thermo-gravimetric; Iron; Oxygen; X

DOI:

10.1016/j.jssc.2012.12.013

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873643414&doi=10.1016%2fj.jssc.2012.12.013&partnerID=40&md5=b279e19d06d903f39fd1edcd2cf27abf

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Другие поля

Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873643414&doi=10.1016%2fj.jssc.2012.12.013&partnerID=40&md5=b279e19d06d903f39fd1edcd2cf27abf
Affiliations	Department of Chemistry, Institute of Natural Sciences, Ural Federal University, Lenin Av. 51, 620000 Ekaterinburg, Russian Federation
Author Keywords	Double perovskite; Oxygen content; Structure transition
References	Maignan, A., Martin, C., Pelloquin, D., Nguyen, N., Raveau, B., (1999) J. Solid State Chem., 142, p. 7; Burley, J.C., Mitchell, J.F., Short, S., Miller, D., Tang, Y., (2003) J. Solid State Chem., 170, p. 339; Taskin, A.A., Lavrov, A.N., Ando, Y., (2005) Appl. Phys. Lett., 86, p. 091910; Malavasi, L., Diaz-Fernandez, Y., Cristina Mozzati, M., Ritter, C., (2008) Solid State Commun., 148, p. 87; Kim, J.H., Manthiram, A., (2008) J. Electrochem. Soc., 155, p. 385; Zhang, K., Ge, L., Ran, R., Shao, Z., Liu, S., (2008) Acta Mater., 56, p. 4876; Kim, J.H., Prado, F., Manthirama, A., (2008) J. Electrochem. Soc., 155, p. 1023; Tarancón, A., Peña-Martínez, J., Marrero-López, D., Morata, A., Ruiz-Morales, J.C., Núñez, P., (2008) Solid State Ionics, 179, p. 2372; Kim, Y.N., Kim, J.H., Manthiram, A., (2010) J. Power Sources, 195, p. 6411; Tarancón, A., Marrero-López, D., Peña-Martínez, J., Ruiz-Morales, J.C., Núñez, P., (2008) Solid State Ionics, 179, p. 611; Tsvetkov, D.S., Ivanov, I.L., Zuev, A.Yu., (2012) Solid State Ionics, 218, p. 13; Tsvetkov, D.S., Sereda, V.V., Zuev, A.Yu., (2010) Solid State Ionics, 180, p. 1620; Medvedev, D.A., Zhuravleva, T.A., Murashkina, A.A., Sergeeva, V.S., Antonov, B.D., (2010) Russ. J. Phys. Chem. A, 84, p. 1623; Thirumurugan, N., Bharathi, A., Sundar, C.S., (2010) J. Magn. Magn. Mater., 322, p. 152; Kulka, A., Hu, Y., Dezanneau, G., Molenda, J., (2011) Funct. Mater. Lett., 4, p. 157; Cherepanov, V.A., Aksenova, T.V., Gavrilova, L.Ya., Mikhaleva, K.N., (2011) Solid State Ionics, 188, p. 53
Correspondence Address	Tsvetkov, D.S.; Department of Chemistry, Institute of Natural Sciences, Ural Federal University, Lenin Av. 51, 620000 Ekaterinburg, Russian Federation; email: Dmitrii.Tsvetkov@usu.ru
CODEN	JSSCB
Language of Original Document	English
Abbreviated Source Title	J. Solid State Chem.
Source	Scopus