Title :
Domain structures of PbTiO3 single crystal and La-modified PbTiO3 thin film by Kelvin force microscope
Author :
Yamamoto, Takashi ; Sakamoto, Junichi ; Saito, Mituru ; Niori, Hirotake
Author_Institution :
Dept. of Commun. Eng, Nat. Defense Acad., Yokosuka, Japan
Abstract :
In PbTiO3 single crystals, 90° a-c, 90° a-a, 180° a-a, 180° c-c domain and connected domain structures have been investigated using a Kelvin force microscope. A new discrimination method for classifying these domain structures was proposed by combining surface gradient, surface electrical potential and difference of step among the domains by etching rate. Two kinds of c domains, called +c domain and -c domain, were measured separately. Similarly, the 180° c-c domain in spontaneously poled (Pb,La)TiO3 thin film on (100)Pt/(100)MgO was discussed with pyroelectric measurements
Keywords :
electric domains; ferroelectric thin films; lanthanum compounds; lead compounds; optical microscopy; surface potential; surface topography; Kelvin force microscope; La-modified PbTiO3 thin film; PbLaTiO3; PbTiO3; PbTiO3 single crystal; c domains; c-c domain; discrimination method; domain structure classification; domain structures; etching rate; pyroelectric measurements; spontaneously poled PbLaTiO3 thin film; surface electrical potential; surface gradient; Crystals; Electric potential; Electron optics; Equations; Etching; Kelvin; Optical microscopy; Rough surfaces; Surface roughness; Transistors;
Conference_Titel :
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-5940-2
DOI :
10.1109/ISAF.2000.942495
