DEFECT STRUCTURE AND PHASE-RELATIONS OF HIGHLY LANTHANUM-DOPED BARIUM-TITANATE

被引：65

作者：

MAKOVEC, D

SAMARDZIJA, Z

DELALUT, U

KOLAR, D

机构：

[1] Department of Ceramics, Jožef Stefan" Institute, University of Ljubljana, Ljubljana

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1995年 / 78卷 / 08期

关键词：

D O I：

10.1111/j.1151-2916.1995.tb08635.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Incorporation of La3+ into the BaTiO, lattice was studied on samples of various composition, using quantitative WDS microanalysis (EPMA) in combination with scanning electron microscopy (SEM) and X-ray powder diffractometry (XRPD). Direct determination of solid-solution formulas by microanalysis supports the structure model of a solid solution with La3+ on Ba2+ sites and a deficient Ti4+ sublattice, independent of the starting composition. Solid solution extends on the tie line, which points from BaTiO3 to La4Ti3O12, to the composition of approximately Ba-0.70-La0.30Ti0.925(V''''(Ti))(0.075)O-3. On the basis of these results, the BaTiO3-rich part of the BaO-La2O3-TiO2 phase diagram wasconstructed.

引用

页码：2193 / 2197

页数：5

共 22 条

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