Published February 21, 2007 | Version v1
Journal article Metadata-only

High permittivity and low loss dielectric ceramics Ba5LnNiNb9O30 (Ln = La, Nd and Sm)

Creators

  • 1. State Key Lab. of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China) and Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin 541004 (China)
  • 2. State Key Lab. of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)
  • 3. Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin 541004 (China)

Description

Three novel Ba5LnNiNb9O30 (Ln = La, Nd and Sm) ceramics were prepared and characterized in the BaO-Ln2O3-NiO-Nb2O5 system. All three compounds are paraelectric phases adopting the filled tetragonal tungsten bronze (TB) structure at room temperature. At 1 MHz, Ba5LnNiNb9O30 ceramics have a high dielectric constants in the range 193-245.3, a low dielectric loss in range 0.0059-0.0087, and the temperature coefficients of the dielectric constant (τ ε) in the range -1140 to -1310 ppm oC-1

Additional details

Identifiers

DOI
10.1016/j.jallcom.2006.04.002;
PII
S0925-8388(06)00393-8;

Publishing Information

Journal Title
Journal of Alloys and Compounds
Journal Volume
429
Journal Issue
1-2
Journal Page Range
p. 280-284
ISSN
0925-8388
CODEN
JALCEU

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39013235
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM OXIDES; CERAMICS; DIELECTRIC MATERIALS; LANTHANUM COMPOUNDS; MICROSTRUCTURE; NEODYMIUM COMPOUNDS; NICKEL OXIDES; NIOBIUM OXIDES; PERMITTIVITY; SAMARIUM COMPOUNDS; SOLIDS; TEMPERATURE COEFFICIENT; TEMPERATURE RANGE 0273-0400 K; TETRAGONAL LATTICES; TUNGSTEN BRONZE; X-RAY DIFFRACTION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALLOYS; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER ALLOYS; COPPER BASE ALLOYS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIELECTRIC PROPERTIES; DIFFRACTION; ELECTRICAL PROPERTIES; MATERIALS; NICKEL COMPOUNDS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; REACTIVITY COEFFICIENTS; REFRACTORY METAL COMPOUNDS; SCATTERING; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN ALLOYS

Optional Information

Copyright
Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.