The Library
Structures of K0.05Na0.95NbO3 (50–300 K) and K0.30Na0.70NbO3 (100–200 K)
Tools
Zhang, N. (Nan), Glazer, A. M. (Anthony Michael), Baker, Daniel William and Thomas, Pam A. (2009) Structures of K0.05Na0.95NbO3 (50–300 K) and K0.30Na0.70NbO3 (100–200 K). Acta Crystallographica. Section B: Structural Science, Vol.65 (No.3). pp. 291-299. doi:10.1107/S0108768109011057 ISSN 0108-7681.
|
PDF
WRAP_Thomas_wf5039.pdf - Requires a PDF viewer. Download (1142Kb) |
Official URL: http://dx.doi.org/10.1107/S0108768109011057
Abstract
Rietveld refinement using neutron powder diffraction data is reported for the potential lead-free piezoelectric material KxNa1 - xNbO3 (x = 0.05, x = 0.3) at low temperatures. The structures were determined to be of rhombohedral symmetry, space group R3c, with the tilt system a-a-a- for both compositions. It was found that some of the structural parameters differ significantly in the two structures, and particularly the NbO6 octahedral strains as a function of temperature. The 300 K profile for K0.05Na0.95NbO3 shows the coexistence of rhombohedral and monoclinic phases, which indicates that the phase boundary is close to room temperature; the phase boundary for K0.30Na0.70NbO3 is found to be at approximately 180 K.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Rietveld method, X-ray crystallography -- Technique, Neutrons -- Diffraction, Piezoelectric materials, Matter -- Properties | ||||
Journal or Publication Title: | Acta Crystallographica. Section B: Structural Science | ||||
Publisher: | Wiley-Blackwell Munksgaard | ||||
ISSN: | 0108-7681 | ||||
Official Date: | June 2009 | ||||
Dates: |
|
||||
Volume: | Vol.65 | ||||
Number: | No.3 | ||||
Page Range: | pp. 291-299 | ||||
DOI: | 10.1107/S0108768109011057 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Funder: | Clarendon Fund (CF), Engineering and Physical Sciences Research Council (EPSRC) |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |