ePubs
The open archive for STFC research publications
Home
About ePubs
Content Policies
News
Help
Privacy/Cookies
Suggest an Enhancement
Contact ePubs
Full Record Details
Persistent URL
http://purl.org/net/epubs/work/66000
Record Status
Checked
Record Id
66000
Title
Unusual Phase Behavior in the Piezoelectric Perovskite System, Li
x
Na
1-
x
NbO
3
Contributors
MD Peel (St. Andrews U.)
,
SE Ashbrook (St. Andrews U.)
,
P Lightfoot (St. Andrews U.)
Abstract
The system LixNa1–xNbO3 has been studied by using a combination of X-ray and neutron powder diffraction and 23Na solid-state NMR spectroscopy. For x = 0.05 we confirm a single polar orthorhombic phase. For 0.08 ? x ? 0.20 phase mixtures of this orthorhombic phase, together with a rhombohedral phase, isostructural with the low-temperature ferroelectric polymorph of NaNbO3, are observed. The relative fractions of these two phases are shown to be critically dependent on synthetic conditions: the rhombohedral phase is favored by higher annealing temperatures and rapid cooling. We also observe that the orthorhombic phase transforms slowly to the rhombohedral phase on standing in air at ambient temperature. For 0.25 ? x ? 0.90 two rhombohedral phases coexist, one Na-rich and the other Li-rich. In this region the phase behavior is independent of reaction conditions.
Organisation
ISIS
,
ISIS-HRPD
,
STFC
Keywords
ISIS 2013
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Inorg Chem
52, no. 15 (2013): 8872-8800.
doi:10.1021/ic401061t
2013
Showing record 1 of 1
Recent Additions
Browse Organisations
Browse Journals/Series
Login to add & manage publications and access information for OA publishing
Username:
Password:
Useful Links
Chadwick & RAL Libraries
SHERPA FACT
SHERPA RoMEO
SHERPA JULIET
Journal Checker Tool
Google Scholar