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| 1 | Enhanced dielectric,ferroelectric,and optical properties in rare earth elements doped PMN-PT thin films显示文摘Rare earth(RE=La^(3+),Sm^(3+),Pr^(3+))ion doped Pb(Mgi/3Nb2/3)O3-PbTi03(RE-PMN-PT)ferroelectric thin films with compositions near the morphotropic phase boundary were grown on the Pt/TiO_(2)/S i02/Si(100)substrate using sol-gel/spin coating method.The phase structure,electrical properties,and photoluminescence performance of thin films were investigated systematically.The highly(100)-preferred orientation was obtained in pure perovskite Sm-PMN-0.30PT thin films with an average grain size of 131 nm.After 2.5%Sm^(3+)doping,the PMN-0.30PT thin films exhibited a triple enhancement of dielectric permittivity with a maximum value of 3500 at 1 kHz,a low dielectric loss of 1.3%,and high remanent polarization of 17.5μC/cm^(2)at room temperature.In visible light and near-infrared band,the transmittance rate increased with PT content and showed the highest value of 85%in 2.5%Sm-PMN-0.31PT.In addition,the films presented strong red-orange emission at 599 nm,which was sensitively in temperature range of 248-273 K corresponding to the rhombohedral to monoclinic phase transition temperature. | Shun ZHOU Dabin LIN Yongming SU Lin ZHANG Weiguo LIU | 2021 | Journal of Advanced Ceramics2021，10，1： | 1 |
| 2 | Phase diagram and dielectric properties of Pb(In_(1/2)Nb_(1/2))O_(3)-Pb(Mg_(1/3)Nb_(2/3))O_(3)-PbTiO_(3) ceramics显示文摘xPb(In_(1/2)Nb_(1/2))O_(3)–yPb(Mg_(1/3)Nb_(2/3))O_(3)–zPbTiO_(3)(xPIN–yPMN–zPT)ternary ceramics with morphotropic phase boundary(MPB)composition were synthesized by columbite precursor method.xPIN–yPMN–zPT phase diagram was investigated by x-ray diffraction and dielectric measurements.According to the results of dielectric measurements,the Curie temperatures(Tc)and rhombohedral to tetragonal phase transition temperature(T_(r-t))were found to be in the range of 173–212℃and 114–155℃,respectively,indicating that the _(Tr-t) was increased with adding PIN component.In the MPB region,the highest T_(r-t)=155℃was found in 0.32PIN–0.38PMN–0.30PT ceramic,that greatly expanded temperature usage range. | Dabin Lin Haohua Chen Zhenrong Li Zhuo Xu | 2015 | Journal of Advanced Dielectrics2015，5，2： | 0 |
| 3 | Effects of particle size of dielectric fillers on the output performance of piezoelectric and triboelectric nanogenerators显示文摘Recently,piezoelectric/triboelectric nanogenerators based on piezoelectric composite materials have been intensively studied to achieve high electrical output perfomiance.In this work,flexible BaTiO_(3)(BT)/PDMS nanocomposite films with various sizes and concentrations were fabricated and used as the nanogenerators.The influence of dielectric properties on the electrical output of nanogenerators was studied as well as the structure of the composites.The dielectric constant increased from 6.5 to 8 with the concentration of BT nanoparticles and decreased with the frequency from 10^(2) to 10^(6) Hz.Furthermore,the dielectric constant showed 11% decrease with the temperature range from 30 to 180℃.It was found that the concentration of BT nanoparticles has promoted the electrical output of nanogenerators.The output voltage and current are all enhanced with the BT nanoparticles,which reached 200 V and 0.24μA in TENG with 40 wt% BT nanoparticles,respectively.The selected device exhibited the power of 0.16 mW and employed to demonstrate its ability to power wearable/portable electronics by lighting the LEDs. | Xiao MENG Zhuo ZHANG Dabin LIN Weiguo LIU Shun ZHOU Shaobo GE Yongming SU Chang PENG Lin ZHANG | 2021 | Journal of Advanced Ceramics2021，10，5： | 0 |
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