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- Title
Enhancement of optical transparency in BiO-modified (KNa)SrNbTiO ceramics for electro-optic applications.
- Authors
Liu, Zhiyong; Fan, Huiqing; Peng, Biaolin
- Abstract
Transparent relaxor ferroelectrics, (KNa)SrNbTiO- x%BiO ( x = 0, 0.5, 1.0, 1.5, and 2, abbreviated as KNSNT-10 x), were fabricated using a pressureless sintering method. With the modification of BiO, the crystal phase of KNSNT ceramics transformed from tetragonal to cubic-like symmetry, and dielectric behaviors became more relaxor like. These changes could reduce the light scattering arisen from birefringence and long-range ordering structure, thus enhancing the optical properties. For KNSNT-10 transparent ceramics, fingerprint morphological nanodomains were observed in the transmission electron microscope image, which made the ceramics sensitive to electric field. Therefore, a large effective linear electro-optic coefficient of 26.1 pm/V was obtained for the KNSNT-10 ceramics, and it is higher than the value (19.9 pm/V) for LiNbO single crystal.
- Subjects
BISMUTH oxides; TRANSPARENCY (Optics); ELECTROOPTICS; FERROELECTRIC crystals; SINTERING; CERAMIC materials
- Publication
Journal of Materials Science, 2015, Vol 50, Issue 24, p7958
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-015-9360-y