In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 50, No. 12R ( 2011-12-01), p. 120207-
Abstract:
Lead-free ceramics (1- x )(K 0.48 Na 0.52 )(Nb 0.98 Sb 0.02 )O 3 – x BiScO 3 + 0.8 mol % MnCO 3 have been fabricated by conventional sintering technique. The results of X-ray diffraction suggest that all samples show pure perovskite structure and the structure changes from orthorhombic to tetragonal with the increase of BiScO 3 . At room temperature, the polymorphic phase transition (PPT) from orthorhombic to tetragonal phases was identified. With the increase in BiScO 3 content, both the cubic–tetragonal and tetragonal–orthorhombic phase transitions shift to lower temperatures; hence, the dielectric and piezoelectric properties are significantly enhanced. As a result, the ceramic with x =0.015 exhibits the following optimum properties: d 33 =265 pC/N, k p =0.509, k t =0.503, ε r =1409, tan
δ=0.034.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.50.120207
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2011
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