6H hexagonal structure of low loss Ba{sub 3}MTiWO{sub 9} (M = Mg, Zn) dielectrics
Journal Article
·
· Materials Research Bulletin
- Department of Ceramics and Glass Engineering/CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)
The crystal structure of Ba{sub 3}MTiWO{sub 9} (M = Mg, Zn) oxides has been found to be 6H hexagonal, space group P6{sub 3}/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.
- OSTI ID:
- 20900951
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 1 Vol. 42; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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