Structure evolution in La(Mg0.5Ti0.5)O3-SrTiO3 system

被引：36

作者：

Avdeev, M ^{[1
]}

Seabra, MP ^{[1
]}

Ferreira, VM ^{[1
]}

机构：

[1] Univ Aveiro, Dept Ceram & Glass Engn, CICECO, P-3810193 Aveiro, Portugal

来源：

MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 08期

关键词：

ceramics; X-ray diffraction; crystal structure;

D O I：

10.1016/S0025-5408(02)00809-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystal structure transformations of dielectric ceramics in the (1-x)La(Mg0.5Ti0.5)O-3 (LMT)-xSrTiO(3) (ST) [0 < x < 1] system were studied using Rietveld analysis of X-ray powder diffraction data. LMT and ST form a solid solution in all the compositional range. Increase of SrTiO3 content results in the following sequence of structure transformations: P2(1)/n (a(-)a(-)c(+), B-site ordered) --> Pbnm (a(-)a(-)c(+)) --> Imma (a(-)a(-)c(0)), I4/mcm (a(0)a(0)c(-)), which are related to the disappearance of B-site cation ordering (x > 0.1), in-phase tilting (x > 0.5), and transition from anti-phase two-tilting to one-tilting system (x > 0.7), respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1459 / 1468

页数：10

共 29 条

[1] Crystal structure of dielectric ceramics in the La(Mg0.5Ti0.5)O3-BaTiO3 system [J].

Avdeev, M ;

Seabra, MP ;

Ferreira, VM .

JOURNAL OF MATERIALS RESEARCH, 2002, 17 (05) :1112-1117

[2] Displacive phase transitions and spontaneous strains in oxygen deficient CaFexTi1-xO3-x/2 perovskites (0≤x≤0.40) [J].

Becerro, AI ;

Seifert, F ;

Angel, RJ ;

Ríos, S ;

McCammon, C .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (15) :3661-3670

[3]

Cho S.Y., 1997, J KOREAN CERAM SOC, V34, P330

[4] Influence of ZnO evaporation on the microwave dielectric properties of La(Zn1/2Ti1/2)O-3 [J].

Cho, SY ;

Seo, MK ;

Hong, KS ;

Park, SJ ;

Kim, IT .

MATERIALS RESEARCH BULLETIN, 1997, 32 (06) :725-735

[5] Contribution of structure to temperature dependence of resonant frequency in the (1-x)La(Zn1/2Ti1/2)O3•xATiO3 (A = Ca, Sr) system [J].

Cho, SY ;

Youn, HJ ;

Lee, HJ ;

Hong, KS .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2001, 84 (04) :753-758

[6] Mixture-like behavior in the microwave dielectric properties of the (1-x)LaAlO3-xSrTiO3 system [J].

Cho, SY ;

Hong, KS ;

Ko, KH .

MATERIALS RESEARCH BULLETIN, 1999, 34 (04) :511-516

[7] EFFECT OF STRUCTURAL-CHANGES IN COMPLEX PEROVSKITES ON THE TEMPERATURE-COEFFICIENT OF THE RELATIVE PERMITTIVITY [J].

COLLA, EL ;

REANEY, IM ;

SETTER, N .

JOURNAL OF APPLIED PHYSICS, 1993, 74 (05) :3414-3425

[8] CLASSIFICATION OF TILTED OCTAHEDRA IN PEROVSKITES [J].

GLAZER, AM .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1972, B 28 (NOV15) :3384-&

[9] SIMPLE WAYS OF DETERMINING PEROVSKITE STRUCTURES [J].

GLAZER, AM .

ACTA CRYSTALLOGRAPHICA SECTION A, 1975, 31 (NOV1) :756-762

[10] SYNTHESIS AND DIELECTRIC-PROPERTIES OF A CUBIC PEROVSKITE - LA(MG1/2TI1/2)O-3 [J].

HARSHE, G ;

BHALLA, AS ;

CROSS, LE .

MATERIALS LETTERS, 1994, 18 (04) :173-175

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