Published January 18, 2007 | Version v1
Journal article Metadata-only

6H hexagonal structure of low loss Ba3MTiWO9 (M = Mg, Zn) dielectrics

Creators

  • 1. Department of Ceramics and Glass Engineering/CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)

Description

The crystal structure of Ba3MTiWO9 (M = Mg, Zn) oxides has been found to be 6H hexagonal, space group P63/mmc, parameters of unit cell: a = 5.7943(1) A, c = 14.1642(1) A and a = 5.7993(1) A, c = 14.1626(1) A for M = Mg and Zn, respectively. The tungsten and titanium atoms are randomly distributed in pairs of face-sharing octahedra separated by octahedral layers containing magnesium or zinc. It was revealed that the structures are well ordered which is believed to result in a low dielectric loss at a microwave frequency reported for these materials

Additional details

Identifiers

DOI
10.1016/j.materresbull.2006.05.005;
PII
S0025-5408(06)00202-9;

Publishing Information

Journal Title
Materials Research Bulletin
Journal Volume
42
Journal Issue
1
Journal Page Range
p. 126-130
ISSN
0025-5408
CODEN
MRBUAC

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38063174
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM OXIDES; DIELECTRIC MATERIALS; HCP LATTICES; LAYERS; MAGNESIUM; MICROWAVE RADIATION; OXIDES; SPACE GROUPS; TITANIUM; TUNGSTEN; X-RAY DIFFRACTION; ZINC
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALKALINE EARTH METALS; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; ELECTROMAGNETIC RADIATION; ELEMENTS; HEXAGONAL LATTICES; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; REFRACTORY METALS; SCATTERING; SYMMETRY GROUPS; TRANSITION ELEMENTS

Optional Information

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