Synthesis, crystal and electronic structures, and thermodynamic characteristics of BaCe1-x In x O3-x/2 solid solutions

被引：4

作者：

Chupakhina, T. I. ^{[1
]}

Matskevich, N. I. ^{[2
]}

Bazuev, G. V. ^{[1
]}

Ovechkina, N. A. ^{[3
]}

Galakhov, V. R. ^{[3
]}

Raeckers, M. ^{[4
]}

Neumann, M. ^{[4
]}

机构：

[1] Russian Acad Sci, Ural Div, Inst Solid State Chem, Ekaterinburg 620041, Russia

[2] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia

[4] Univ Osnabruck, Fachbereich Phys, D-4500 Osnabruck, Germany

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2010年 / 55卷 / 07期

关键词：

PROTONIC CONDUCTION; PHASE-TRANSITIONS; DOPED SRCEO3; RAY EMISSION; IONIC-RADII; BULK STATE; BACEO3; SPECTROSCOPY; BA2IN2O5; PEROVSKITES;

D O I：

10.1134/S003602361007003X

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New perovskite oxide phases BaCe1 - x In (x) O3 - x/2 (x = 0.1-0.8) (space group Pbnm) have been synthesized. The unit cell volume of the resulting solid solutions monotonically decreases with an increase in the degree of substitution of indium for cerium due to the contraction of octahedra in perovskite blocks. The thermodynamic stability of the compound BaCe0.75In0.25O2.875 was studied by the solution calorimetry method, and barium cerates were shown to be thermodynamically stable with respect to binary oxides at room temperature. The structure of occupied and vacant states in BaCe1 - x In (x) O3 - x/2 was determined on the basis of X-ray emission, absorption, and photoelectron spectra, and the energy gap was estimated at similar to 2 eV.

引用

页码：1002 / 1009

页数：8

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