|
|||||
|
|
Effect of doping with Nd ions on the structural and ferroelectric properties of Ca0.28Ba0.72Nb2O6 single crystal |
|
| Authors: | WL Gao SQ Xia D Liu MH Jiang JF Wang |
| Affiliation: | a State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, 27 South Shanda Road, Jinan, Shandong 250100, PR China b School of Physics, Shandong University, Jinan 250100, PR China c Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, PR China |
| Abstract: | The crystal structure of Ca0.28Ba0.72Nb2O6 (CBN-28) crystal with Nd-doping has been determined from X-ray single crystal diffraction data, in the tetragonal system with space group P4bm and the following parameters: a = b = 12.458 Å, c = 3.954 Å, V = 613.688 Å3, and Z = 5. X-ray diffraction results on a Nd-doped CBN-28 single crystal also have demonstrated that Nd3+ and Ca2+ occupy the same site in the crystal structure. Dielectric and ferroelectric measurements have been performed. Transition from ferroelectric to paraelectric at around 223 °C has been observed. The Nd-doped crystal has a lower Curie temperature (Tm) than that of undoped CBN-28 crystal. The spontaneous polarization (Ps) and coercive electric field (Ec) also decrease compared with their values in the undoped CBN-28 crystal. |
| Keywords: | A Oxides C X-ray diffraction D Dielectric properties D Ferroelectricity |
| 本文献已被 ScienceDirect 等数据库收录！ | |