In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 52, No. 9S1 ( 2013-09-01), p. 09KC02-
Abstract:
(1- x )NaNbO 3 – x BaTiO 3 single crystals were grown by slow-cooling and flux methods. In the slow-cooling method, 0.88NaNbO 3 –0.12BaTiO 3 powder was melted in a platinum crucible at 1500 °C and cooled down to 1000 °C. Slow cooling at less than 21 °C/h led to a bulky single crystal, and the BaTiO 3 /NaNbO 3 ratio was graded inside the single crystal as expected from the phase diagram. Further slow cooling at 5 °C/h with the aim of improving the compositional uniformity increased the level of contamination of platinum in the single crystals from the crucible. Cuboidal single crystals with a (100) facet were grown in Na 2 B 4 O 7 flux through a cooling process from 1200 to 1000 °C at 1 °C/h. There was no compositional gradient inside the cuboidal crystals, and the BaTiO 3 content of the single crystals remained within 2–3% irrespective of the raw powder/flux ratio and the BaTiO 3 composition in the raw powder. The obtained single crystals were orthorhombic ferroelectrics with a phase transition temperature of 310–330 °C.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.7567/JJAP.52.09KC02
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2013
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
Permalink