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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2005, Volume 82, Issue 11, Pages 814–817
(Mi jetpl1636)
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This article is cited in 5 scientific papers (total in 5 papers)
CONDENSED MATTER
New crystal-structure phase in oxygen-nonstoichiometric double-layered perovskite NdBaCo$_2$O$_{5.72}$
L. S. Lobanovskii, I. O. Troyanchuk Institute of Solid State Physics and Semiconductors NASB, Minsk
Abstract:
The crystal structure of an NdBaCo$_2$O$_{5+\delta}$ ($\delta=0.72$) solid solution with a layered perovskite structure is studied by neutron diffraction. It is found that a new crystal-structure phase with the cation-anion ratio $1$:$1$:$2$:$5.75$ forms in this solid solution. At the same time, oxygen vacancy ordering occurs in the plane of the rare-earth ion in the crystallographic position $1c\left(0\ 0\ \frac{1}{2}\right)$ of the $Pmmm$ space group. Oxygen vacancy diffusion along the crystallographic axes in the pane of the rare-earth element is also proposed as a mechanism for the formation of other crystal-structure phases found in double-layered cobaltites.
Citation:
L. S. Lobanovskii, I. O. Troyanchuk, “New crystal-structure phase in oxygen-nonstoichiometric double-layered perovskite NdBaCo$_2$O$_{5.72}$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 82:11 (2005), 814–817; JETP Letters, 82:11 (2005), 719–722
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https://www.mathnet.ru/eng/jetpl1636 https://www.mathnet.ru/eng/jetpl/v82/i11/p814
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Abstract page: | 182 | Full-text PDF : | 59 | References: | 42 |
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