Structure, phase transitions and optical properties of pure and rare earth doped BaCeO3, SrCeO3 prepared by inductive melting

被引：51

作者：

Melekh, BT ^{[1
]}

Egorov, VM ^{[1
]}

Baikov, YM ^{[1
]}

Kartenko, NF ^{[1
]}

Filin, YN ^{[1
]}

Kompan, ME ^{[1
]}

Novak, II ^{[1
]}

Venus, GB ^{[1
]}

Kulik, VB ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,IOFFE PHYSICOTECH INST,ST PETERSBURG 194021,RUSSIA

来源：

SOLID STATE IONICS | 1997年 / 97卷 / 1-4期

关键词：

high-temperature proton conductors; barium cerate; strontium cerate; acceptor doped cerates; structure; phase transition;

D O I：

10.1016/S0167-2738(97)00093-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fused crystalline BaCe(1-x)Ln(x)O(3-delta) (Ln = Y,Gd,Nd, 0 < x < 0.2), and SrCe1-xDyxO3-delta (x = 0; 0.05) have been prepared by inductive melting. XRPD measurements have showed that annealed BaCeO3 was orthorhombic. DSC spectra of BaCeO3 have showed two peaks at 533 K and 630 K. Phase transitions in the range 270-900 K were not revealed in BaCe0.8Y0.2O3-delta, BaCe0.9Nd0.1O3-delta and SrCeO3. For comparison ceramic BaCeO3:Gd was considered. Raman spectra of BaCeO3 have confirmed the X-ray data on the orthorhombic symmetry for annealed samples. Eu-luminescence study of BaCeO3:(Y + Eu) has confirmed the octahedral oxygen enviroment of trivalent dopant ions.

引用

页码：465 / 470

页数：6

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