Title :
Pyroelectric performances of rhombohedral 0.42Pb(In1/2Nb1/2)O3-0.3Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 single crystals
Author :
Liu, Linhua ; Wu, Xiao ; Zhao, Xiangyong ; Feng, Xiqi ; Jing, Weiping ; Luo, Haosu
Author_Institution :
Shanghai Inst. of Ceramics, Chinese Acad. of Sci., Shanghai, China
fDate :
10/1/2010 12:00:00 AM
Abstract :
Relaxor-based ferroelectric single crystals xPb(In1/2Nb1/2)O3-yPb(Mg1/3Nb2/3)O3-(100x100y)PbTiO3 {PIMNT [100x/100y/100(100x100y)]} have been grown by a modified Bridgman technique. The as-grown PIMNT (42/30/28) crystal with rhombohedral perovskite-type structure shows higher Curie temperature TC ~ 187°C, and higher ferroelectric rhombohedral-to-tetragonal phase transition temperature TRT ~ 152°C, both about 50°C higher than those found for 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 crystals. Moreover, as a core parameter of pyroelectric material, the detectivity figures-of-merit of PIMNT (42/30/28) crystal are higher than other typical relaxor-based ferroelectric crystals, which primarily stems from the lower dielectric loss, making it promising candidate for infrared detector applications.
Keywords :
X-ray diffraction; X-ray fluorescence analysis; crystal growth from melt; ferroelectric Curie temperature; ferroelectric transitions; lead compounds; pyroelectricity; relaxor ferroelectrics; Bridgman technique; Curie temperature; Pb(In0.5Nb0.5)O3-Pb(Mg0.33Nb0.67)O3-PbTiO3; XRFA analysis; detectivity figures-of-merit; ferroelectric rhombohedral-tetragonal phase transition temperature; powder XRD; pyroelectric performances; relaxor-based ferroelectric single crystals; rhombohedral single crystals; Art; Ceramics; Crystals; Dielectrics; Temperature; Temperature measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2010.1672
