Ferroelectric phase transition in Ba5RTi3Nb7O30 [R = Nd, Eu, Gd] ceramics

被引：52

作者：

Choudhary, RNP ^{[1
]}

Shannigrahi, SR ^{[1
]}

Singh, AK ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India

来源：

BULLETIN OF MATERIALS SCIENCE | 1999年 / 22卷 / 06期

关键词：

polycrystalline; ferroelectric; tungsten-bronze structure; dielectric constant; electrical conduction;

D O I：

10.1007/BF02745689

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polycrystalline samples of Ba5RTi3Nb7O30 [R = Nd, Eu, Gd], were prepared using high-temperature solid-state reaction technique. Preliminary X-ray structural analysis of the compounds shows the formation of single phase compounds (orthorhombic crystal system) at room temperature. Detailed studies of dielectric properties (epsilon, tan delta, sigma) as a function of frequency (400 Hz to 10 kHz) and temperature (30 degrees to 380 degrees C) show that these compounds exhibit diffuse ferroelectric phase transition.

引用

页码：975 / 979

页数：5

共 21 条

[11]

NENZO PV, 1967, J APPL PHYS LETT, V11, P23

[12] DIFFUSENESS AS A USEFUL PARAMETER FOR RELAXOR CERAMICS [J].

PILGRIM, SM ;

SUTHERLAND, AE ;

WINZER, SR .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (10) :3122-3125

[13]

Rubin J.J., 1967, J. Cryst. Growth, V1, P315, DOI DOI 10.1016/0022-0248(67)90039-5

[14] Phase transition in Ba5RTi3Nb7O30 (R=Dy, Sm) ferroelectric ceramics [J].

Shannigrahi, SR ;

Choudhary, RNP ;

Kumar, A ;

Acharya, HN .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1998, 59 (05) :737-742

[15] X-RAY, SCANNING ELECTRON-MICROSCOPIC AND DIELECTRIC-PROPERTIES OF FERROELECTRIC BA2NA3RNB10O30(R = LA OR SM) CERAMICS [J].

SINGH, KS ;

SATI, R ;

CHOUDHARY, RNP .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1992, 11 (11) :788-790

[16] SYNTHESIS AND DIELECTRIC-PROPERTIES OF BA3NARNB10O30[R = LA AND SM] [J].

SINGH, KS ;

SATI, R ;

CHOUDHARY, RNP .

PRAMANA-JOURNAL OF PHYSICS, 1992, 38 (02) :161-166

[17] DIELECTRIC BEHAVIOR OF MODIFIED FERROELECTRIC BA4NA2NB10O30 CERAMICS [J].

RAO, PSVS ;

RAO, KS ;

BHANUMATHI, A .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1987, 6 (03) :299-300

[18] FERROELECTRIC AND ANTIFERROELECTRIC MATERIALS [J].

SUBBARAO, EC .

FERROELECTRICS, 1973, 5 (3-4) :267-280

[19]

UITERT LG, 1967, APPL PHYS LETT, V11, P161

[20] ELASTO-OPTIC PROPERTIES OF BI12GEO20 BI12SIO20 AND SRXBA1-XNB2O6 [J].

VENTURINI, EL ;

SPENCER, EG ;

BALLMAN, AA .

JOURNAL OF APPLIED PHYSICS, 1969, 40 (04) :1622-+

← 1 2 3 →