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Non-contact method using fluorescence to measure Curie temperature of ferroelectric
The invention provides a non-contact method using fluorescence to measure Curie temperature of ferroelectric. The method is characterized in that during the synthesis stage of the ferroelectric, oxide of Er<3+> is used as additive; during compounding, the adopted Er3+ occupies the B bit of an ABO3 perovskite structure; A bit is one kind of Ba<2+>, Pb<2+>, K+ and Na<1+>; B bit is one kind of Mg<2+>, Nb<5+>, Ni<2+>, Zn<2+> and Ti<4+>; 980mm laser is adopted to excite the rare earth ion upconversion green and red fluorescence and a fiber optic spectrometer tests the Er<3+> rare earth ion upconversion fluorescence; Er doping is performed for the ferroelectric by use of rare earth ions at different temperatures; and at last, via proportion of red light intensity to green light intensity or differential coefficient of the proportion, change of Curie temperature of the ferroelectric is monitored. Compared with the prior art, the invention is advantageous in that the non-contact mode is adopted, so operation is simple and easy; whole measurement cost is low; monitoring for temperature of the ferroelectric can be performed; and measuring processes can be easily controlled.
Non-contact method using fluorescence to measure Curie temperature of ferroelectric
The invention provides a non-contact method using fluorescence to measure Curie temperature of ferroelectric. The method is characterized in that during the synthesis stage of the ferroelectric, oxide of Er<3+> is used as additive; during compounding, the adopted Er3+ occupies the B bit of an ABO3 perovskite structure; A bit is one kind of Ba<2+>, Pb<2+>, K+ and Na<1+>; B bit is one kind of Mg<2+>, Nb<5+>, Ni<2+>, Zn<2+> and Ti<4+>; 980mm laser is adopted to excite the rare earth ion upconversion green and red fluorescence and a fiber optic spectrometer tests the Er<3+> rare earth ion upconversion fluorescence; Er doping is performed for the ferroelectric by use of rare earth ions at different temperatures; and at last, via proportion of red light intensity to green light intensity or differential coefficient of the proportion, change of Curie temperature of the ferroelectric is monitored. Compared with the prior art, the invention is advantageous in that the non-contact mode is adopted, so operation is simple and easy; whole measurement cost is low; monitoring for temperature of the ferroelectric can be performed; and measuring processes can be easily controlled.
Non-contact method using fluorescence to measure Curie temperature of ferroelectric
LUO LAIHUI (Autor:in) / YAO YONGJIE (Autor:in) / ZUO QIANGHUI (Autor:in) / LI WEIPING (Autor:in)
09.09.2015
Patent
Elektronische Ressource
Englisch
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