Monoclinic Mc phase in (001) field cooled BaTiO3 single crystals
作者： Hu Cao , Christopher P. Devreugd , Wenwei Ge , Jiefang Li , D. Viehland
DOI: 10.1063/1.3073716
关键词: Monoclinic crystal system 、 Crystal structure 、 X-ray crystallography 、 Tetragonal crystal system 、 Ferroelectricity 、 Diffraction 、 Piezoelectricity 、 Materials science 、 Electric field 、 Crystallography
摘要: We report here the finding of a new phase in BaTiO3 single crystals. High precision x-ray diffraction investigations (001) field cooled crystals have shown presence monoclinic MC for temperatures below 300 K. This is to be stable upon removal electric field. The results demonstrate structurally bridging low symmetry phases that lie between tetragonal and rhombohedral ones this classic perovskite system: indicating means achieve high piezoelectricity Pb-free systems via domain engineering.
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