Processing by both classical and mechanosynthesis routes and characterization of a new solid solution of tungsten-bronze structure ceramics
- Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid (Spain)
- Faculte des Sciences Semlalia, Universite Cadi Ayyad, Bd. Prince My Abdallah, BP 2390, 40001 Marrakech (Morocco)
A new family of ferroelectric compounds with Ba{sub 2-x}Na{sub 1+x}Li {sub x}Nb{sub 5}O{sub 15} composition (0 {<=} x {<=} 1) and tetragonal tungsten-bronze structure is processed for the first time. This new family of materials derived from Ba{sub 2}NaNb{sub 5}O{sub 15} compound was processed by classical solid-state reaction and by mechanosynthesis. The powders prepared by these two routes were characterized by X-ray diffraction (at room and high temperature), differential thermal analysis, thermogravimetry and scanning electron microscopy. The results confirm the formation of the solid solution in the whole range of composition. The influence of Li addition on the dielectric permittivity and losses and on the ferro-paraelectric transition temperature is also studied.
- OSTI ID:
- 20891924
- Journal Information:
- Materials Research Bulletin, Vol. 41, Issue 10; Other Information: DOI: 10.1016/j.materresbull.2006.03.021; PII: S0025-5408(06)00121-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
New high permittivity tetragonal tungsten bronze dielectrics Ba{sub 2}LaMNb{sub 4}O{sub 15}: M=Mn, Fe
Microstructure-property relations in tungsten bronze lead barium niobate, Pb sub 1 minus sub x Ba sub x Nb sub 2 O sub 6