Investigation of the structural and microstructural properties of Gd3+-modified BaTiO3 ceramics

被引：2

作者：

Oliveira, M. A. ^{[1
,2
]}

Silva, M. C. O. ^{[1
]}

M'peko, J. C. ^{[3
]}

Hernandes, A. C. ^{[3
]}

Mendez-Gonzalez, Y. ^{[1
,4
]}

Guerra, J. D. S. ^{[1
]}

机构：

[1] Univ Fed Uberlandia, Inst Fis, Grp Ferroeletr & Mat Multifunc, Uberlandia, MG, Brazil

[2] UNESP, Dept Fis & Quim, Campus Ilha Solteira, Ilha Solteira, SP, Brazil

[3] Univ Sao Paulo, IFSC, Grp Nanomat & Ceram Avancadas, Sao Carlos, SP, Brazil

[4] Univ La Habana, Inst Ciencia & Tecnol Mat, Fac Fis, Havana, Cuba

来源：

FERROELECTRICS | 2019年 / 545卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

Barium titanate; ceramics; Pechini's method; structural properties; CHEMISTRY; CRYSTAL;

D O I：

10.1080/00150193.2019.1621710

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structural and microstructural properties of lead-free BaBa1-xGdxTiO3 ceramics are investigated. The results confirm the formation of the ferroelectric phase, for all the cases, revealing a decrease in the unit-cell volume (V) with the increase of the gadolinium concentration, which can be associated to the difference between the ionic-radii of the involved ions (Gd3+ and Ba2+). A decrease in the average grain-size, with the increase of the Gd3+ content, was associated to the pinning effect (typical of rare-earths) due to the contribution of minor additional phase, which is not easily detectable by X-ray diffraction technique at very low dopant concentrations.

引用

页码：47 / 54

页数：8

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