The Library
Dielectric and structural studies of Ba[sub 2]MTi[sub 2]Nb[sub 3]O[sub 15] (BMTNO[sub 15], M=Bi[sup 3+],La[sup 3+],Nd[sup 3+],Sm[sup 3+],Gd[sup 3+]) tetragonal tungsten bronze-structured ceramics
Tools
Tools
Tools
Stennett, Martin C., Reaney, Ian M., Miles, G. C., Woodward, David I., West, Anthony R., Kirk, C. A. and Levin, I. (2007) Dielectric and structural studies of Ba[sub 2]MTi[sub 2]Nb[sub 3]O[sub 15] (BMTNO[sub 15], M=Bi[sup 3+],La[sup 3+],Nd[sup 3+],Sm[sup 3+],Gd[sup 3+]) tetragonal tungsten bronze-structured ceramics. Journal of Applied Physics, Vol.101 (No.10). 104114/1-104114/7. doi:10.1063/1.2205720 ISSN 0021-8979.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1063/1.2205720
Abstract
The structure and dielectric properties of a new family of tetragonal tungsten bronze (TTB) ceramics with the general formula, Ba2MTi2Nb3O15 where M=Bi3+,La3+,Nd3+,Sm3+,Gd3+, have been investigated. Hereafter the compositions will be referred to by the abbreviation BMTNO15 where M=B(Bi3+), L(La3+), N(Nd3+), S(Sm3+) or G(Gd3+). BLTNO15 [permittivity maximum (Tm)∼-80 °C] and BBTNO15 (Tm∼-100 °C) exhibited relaxorlike dielectric behavior. In contrast, BNTNO15 (Tm∼165 °C), BSTNO15 (Tm∼250 °C), and BGTNO15 (Tm∼320 °C) were classic ferroelectrics. Tm increased with decreasing radius of the M ion. Room temperature x-ray powder diffraction (XRD) patterns of all the compounds indexed on a prototype P4/mbm (or P4bm) space- group with lattice parameters a≈12.4 Å and c≈4 Å. However, electron diffraction revealed that the relaxor phases, BLTNO15 and BBTNO15, exhibited an incommensurate modulation, whereas the classic ferroelectric BNTNO15, BSTNO15, and BGTNO15 featured an orthorhombic superstructure with lattice parameters a≈b≈√2aTTB and c≈2cTTB.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Dielectrics, Electrical ceramics, Ferroelectric ceramics, Tungsten bronze, Microstructure | ||||
| Journal or Publication Title: | Journal of Applied Physics | ||||
| Publisher: | American Institute of Physics | ||||
| ISSN: | 0021-8979 | ||||
| Official Date: | 2007 | ||||
| Dates: |
|
||||
| Volume: | Vol.101 | ||||
| Number: | No.10 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | 104114/1-104114/7 | ||||
| DOI: | 10.1063/1.2205720 | ||||
| Status: | Peer Reviewed | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Filtronic Comtek, PLC |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
