Structural and ferroelectric properties of (1-X) Ba3.75Y0.83Nb10O30-XBa3.75Sm0.83Nb10O30 solid solutions

Citation
Jk. Wang et al., Structural and ferroelectric properties of (1-X) Ba3.75Y0.83Nb10O30-XBa3.75Sm0.83Nb10O30 solid solutions, J CERAM S J, 108(1), 2000, pp. 36-39
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
ISSN journal
09145400 → ACNP
Volume
108
Issue
1
Year of publication
2000
Pages
36 - 39
Database
ISI
SICI code
0914-5400(200001)108:1<36:SAFPO(>2.0.ZU;2-5
Abstract
Solid solutions of (1 - X)Ba3.75Y0.83Nb10O30-XBi3.75Sm0.83Nb10O30 were synt hesized and examined with regard to their ferroelectric properties. No abno rmal changes of lattice parameters were found over the investigated range o f solid solution. Hysteresis curve measurement indicated that the polarizat ion property could be improved by employing different rare earth cations. T he coercive held (E-c) decreased as the composition approached Ba3.75Sm0.83 Nb10O30. The remanent polarization (P-r) of the solid solution was higher t han those of end members, and maximum values were observed at X = 0.4-0.6. Variation of Curie temperature and cell distortion showed the same tendency as that of E-c. Atomic displacement calculated from refined structural par ameters agreed with the abnormal change of P-r. The contribution of larger macroscopic polarization for X = 0.4-0.6 region could be apparently attribu ted to the larger displacement of Nb5+ ions.