PROPERTIES OF Nb-AND Mo-MODIFICATED SrBi4Ti4O15 FERROELECTRIC CERAMICS
| Autor: | Jun-Hui He, Xiangyu Mao, Jian-Cang Shen, Xiaobing Chen, Jun Zhu, Can Jin |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Ferroelectric ceramics Doping Niobium Analytical chemistry chemistry.chemical_element Dielectric Coercivity Condensed Matter Physics Ferroelectricity Electronic Optical and Magnetic Materials Nuclear magnetic resonance chemistry Control and Systems Engineering Materials Chemistry Ceramics and Composites Curie temperature Thermal stability Electrical and Electronic Engineering |
| Zdroj: | Integrated Ferroelectrics. 85:39-47 |
| ISSN: | 1607-8489 1058-4587 |
| Popis: | An investigation on the ferroelectric and dielectric properties of higher-valent-cations Nb-and Mo-modificated SrBi4Ti4O15 ceramics was presented. The ferroelectric property of SrBi4Ti4O15 was both obviously improved by niobium and molybdenum doping. The remnant polarization (2P r ) of both Nb-and Mo-modificated SrBi4Ti4O15 increases at first, then decreases with further doping. As the doping content is 0.03 and 0.06 respectively, the 2P r maximizes at a value of 24.7 μC/cm2 and 26.5 μC/cm2, which is about twice larger than that of SrBi4Ti4O15. Meanwhile, the coercive field is increased less than 20% upon Nb and Mo substitution. The Curie temperature of the samples shifted hardly by Nb-and Mo-doping, which indicates that the good thermal stability of SrBi4Ti4O15 is not affected. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|