Title :
Cooling-rate-dependent domain structures of PMN-PT single crystals observed by contact resonance piezoresponse force microscopy
Author :
Sakamoto, Junichi ; Okino, Hirotake ; Yamamoto, Takashi
Author_Institution :
Dept. of Commun. Eng., Nat. Defense Acad., Kanagawa, Japan
Abstract :
The domain structures of PMN-0.32PT single crystals were observed at the same area at room temperature after 240°C thermal treatment with various cooling rate. Contact resonance piezoresponse force microscopy was utilized for observing domain structures in order to obtain microdomain images nondestructively. The average domain size decreased as cooling rate increased. The dielectric properties in ferroelectric phase was also influenced the cooling rate. If peak temperature of thermal treatment was higher than 135°C, the dielectric constant in ferroelectric phase decreased as cooling rate increased.
Keywords :
cooling; dielectric resonance; domains; heat treatment; lead compounds; optical microscopy; permittivity; relaxor ferroelectrics; 20 degC; 240 degC; PMN-PbTiO3; PbMgO3NbO3-PbTiO3; contact resonance piezoresponse force microscopy; cooling rate; cooling-rate-dependent domain structures; dielectric constant; dielectric properties; domain size; ferroelectric phase; microdomain images; nondestructive imaging; single crystals; thermal treatment; Cooling; Crystals; Dielectrics; Electrodes; Ferroelectric materials; Microscopy; Polarization; Resonance; Temperature; Thermal force;
Conference_Titel :
Applications of Ferroelectrics, 2004. ISAF-04. 2004 14th IEEE International Symposium on
Print_ISBN :
0-7803-8410-5
DOI :
10.1109/ISAF.2004.1418397
