LHPG grown crystal fibers of MgTiO3-CaTiO3 eutectic system

被引：7

作者：

Jiang, YJ ^{[1
]}

Guo, RY ^{[1
]}

Bhalla, AS ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1998年 / 59卷 / 05期

关键词：

MgTiO3-CaTiO3; B-crystal growth; microwave dielectrics;

D O I：

10.1016/S0022-3697(97)00244-8

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fiber crystals of MgTiO3-CaTiO3 eutectic system are grown using the laser heated pedestal growth (LHPG) technique. The as grown crystal fibers of composition (Mg0.95Ca0.05)TiO3 contain MgTiO3 and CaTiO3 crystals, and are analyzed by X-ray powder diffraction, SEM and EPMA Crystal fibers grown between 1650 and 1680 degrees C represent 2:3 and 1:3 composite configuration, while those grown between 1700 and 1720 degrees C show 1:3 connectivity. CaTiO3 crystal grows along the fiber growth direction and MgTiO3 phase forms the body matrix of the fiber. The dielectric constants, loss factors of(Mg0.95Ca0.05)TiO3 and CaTiO3 ceramics are measured and their relationship to crystal growth conditions and microstructure are discussed. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：611 / 615

页数：5

共 19 条

[1]

Feigelson R. S., 1988, MRS BULL, V13, P47, DOI [10.1557/S0883769400064198, DOI 10.1557/S0883769400064198]

[2] MAGNESIUM TITANATE MICROWAVE DIELECTRIC CERAMICS [J].

FERREIRA, VM ;

AZOUGH, F ;

BAPTISTA, JL ;

FREER, R .

FERROELECTRICS, 1992, 133 (1-4) :127-132

[3] LOSS SPECTRA OF PURE AND LA-DOPED MGTIO3 MICROWAVE CERAMICS [J].

FERREIRA, VM ;

BAPTISTA, JL ;

PETZELT, J ;

KOMANDIN, GA ;

VOITSEKHOVSKII, VV .

JOURNAL OF MATERIALS RESEARCH, 1995, 10 (09) :2301-2305

[4]

Freer R., 1993, SILICATES LNDUSTRIEL, V9, P191

[5] STRONTIUM ALUMINUM TANTALUM OXIDE AND STRONTIUM ALUMINUM NIOBIUM OXIDE AS POTENTIAL SUBSTRATES FOR HTSC THIN-FILMS [J].

GUO, RY ;

BHALLA, AS ;

SHEEN, J ;

AINGER, FW ;

ERDEI, S ;

SUBBARAO, EC ;

CROSS, LE .

JOURNAL OF MATERIALS RESEARCH, 1995, 10 (01) :18-25

[6]

Haggerty JS, 1976, U.S. Patent, Patent No. [3,944,640, 3944640]

[7]

HAGGERTY JS, 1977, Patent No. 4012213

[8]

MOULSON AJ, 1990, ELECTROCERAMICS, P237

[9]

Ouchi H., 1985, Jap. J. Appl. Phys, V24, P60

[10] APPLICATION OF DIELECTRIC RESONATORS IN MICROWAVE COMPONENTS [J].

PLOURDE, JK ;

REN, CL .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1981, 29 (08) :754-770

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