Pb(In_(1/2)Nb_(1/2))O_(3)-Pb(Mg_(1/3)Nb_(2/3))TO_(3)-PbTiO_(3)(PIN-PMN-PT)relaxor ferroelectric crystals in 500 diameter by 500 length were grown by the Bridgman(BR)method for the first time.Typical issues in the crys...Pb(In_(1/2)Nb_(1/2))O_(3)-Pb(Mg_(1/3)Nb_(2/3))TO_(3)-PbTiO_(3)(PIN-PMN-PT)relaxor ferroelectric crystals in 500 diameter by 500 length were grown by the Bridgman(BR)method for the first time.Typical issues in the crystal growth concerning large volume of the melt,high density of the crystal and corrosion of the melt on the wall of Pt crucible are discussed.展开更多
Temperature and electric field dependences of the dielectric behavior and phase transition for[111]-oriented 0.23PIN–0.52PMN–0.25PT(PIN-PMN–0.25PT)and 0.24PIN–0.43PMN–0.33PT(PIN–PMN–0.33PT)single crystals were ...Temperature and electric field dependences of the dielectric behavior and phase transition for[111]-oriented 0.23PIN–0.52PMN–0.25PT(PIN-PMN–0.25PT)and 0.24PIN–0.43PMN–0.33PT(PIN–PMN–0.33PT)single crystals were investigated over a temperature range from100℃ to 250℃ using field-heating(FH)dielectric measurements.The transition phenomenon from ferroelectric microdomain to macrodomain was found in rhombohedra(R)phase region in the single crystals under dc bias.This transition temperature T_(f) of micro-to-macrodomain is sensitive to dc bias and move quickly to lower temperature with increasing dc bias.The phase transition temperatures in the two single crystals shift toward high temperature and the dielectric permittivities at the phase transition temperature decrease with increasing dc bias.Especially,the phase transition peaks are gradually broad in PIN–PMN–0.33PT single crystal with the increasing dc bias.Effects of dc bias on the dielectric behavior and phase transition in PIN–PMN–PT single crystals are discussed.展开更多
基金This work was financially supported by the National Natural Science Foundation of China under Grant Nos.51761145024,61627812 and 61974117.
文摘Pb(In_(1/2)Nb_(1/2))O_(3)-Pb(Mg_(1/3)Nb_(2/3))TO_(3)-PbTiO_(3)(PIN-PMN-PT)relaxor ferroelectric crystals in 500 diameter by 500 length were grown by the Bridgman(BR)method for the first time.Typical issues in the crystal growth concerning large volume of the melt,high density of the crystal and corrosion of the melt on the wall of Pt crucible are discussed.
基金supported by the National High Technology Research and Development Program of China(863 Program)(Grant No.2012AA03A704).
文摘Temperature and electric field dependences of the dielectric behavior and phase transition for[111]-oriented 0.23PIN–0.52PMN–0.25PT(PIN-PMN–0.25PT)and 0.24PIN–0.43PMN–0.33PT(PIN–PMN–0.33PT)single crystals were investigated over a temperature range from100℃ to 250℃ using field-heating(FH)dielectric measurements.The transition phenomenon from ferroelectric microdomain to macrodomain was found in rhombohedra(R)phase region in the single crystals under dc bias.This transition temperature T_(f) of micro-to-macrodomain is sensitive to dc bias and move quickly to lower temperature with increasing dc bias.The phase transition temperatures in the two single crystals shift toward high temperature and the dielectric permittivities at the phase transition temperature decrease with increasing dc bias.Especially,the phase transition peaks are gradually broad in PIN–PMN–0.33PT single crystal with the increasing dc bias.Effects of dc bias on the dielectric behavior and phase transition in PIN–PMN–PT single crystals are discussed.
