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Yang Fei,Shi Yu Jia,Lin Lin,Chen Jing Yao,Hou Meng Zhe,Yu Ke Xin,Zhang Yi Han,Yuan Zheng,Li Xiao Fang,Hu Yan Chun,Shang Jun,Yin Shao Qian,Wang Xian Wei 한국물리학회 2023 Current Applied Physics Vol.50 No.-
In this work, to prepare the PbZr0.52Ti0.48O3(PZT)/PbZrO3(PZ) multilayer films, PZ films and PZT films were spin-coated on LaNiO3/SiO2/Si substrates in sequence by the sol-gel method, and the PZ films were prepared using PZ precursor solution with different concentrations. After each spin-coating, PZ layer and PZT layer were annealed with rapid thermal annealing (RTA) technique at 650 ◦C and 550 ◦C, respectively. The crystal structures, microstructures and electrical properties of the films with different PZ film thickness were comprehensively investigated. The PZ films with different thickness showed perovskite phase. The PZT films on crystallized PZ films exhibited the coexistence of pyrochlore phase and perovskite phase at the annealing temperature of 550 ◦C. The PZT/PZ multilayer films with 0.2 M PZ precursor solution exhibit typical anti-ferroelectricity with double hysteresis loops, while other multilayer films exhibit nearly linear loops. In addition, the recoverable energy storage density increases with the increase of the film thickness and reaches the maximum value 32.4 J/ cm3 in the PZT/PZ multilayer films with 0.4 M PZ precursor solution. Therefore, the ferroelectric properties of the PZT/PZ multilayer films could be regulated by different PZ film thickness, which effectively further enhances the energy storage performance.
Kumar, Ajeet,Yoon, Jang Yuel,Thakre, Atul,Peddigari, Mahesh,Jeong, Dae-Yong,Kong, Young-Min,Ryu, Jungho The Korean Ceramic Society 2019 한국세라믹학회지 Vol.56 No.4
In this study, the dielectric and polarization properties of manganese (Mn% = 0.0, 0.1, 0.2, 0.5) doped (Pb<sub>0.93</sub>La<sub>0.07</sub>)(Zr<sub>0.82</sub>Ti<sub>0.18</sub>)O<sub>3</sub> (PLZT 7/82/18) anti-ferroelectric ceramics were studied for energy storage capacitor and pyroelectric applications. A systematic investigation demonstrated that the electric properties of PLZT 7/82/18 ceramics are affected significantly by the Mn-doping content. A maximum dielectric constant of ~ 2,128 at 1 kHz was found for 0.1% Mn-doped PLZT ceramics with a low dielectric loss of 0.018. The bipolar polarization versus electric field (P-E) hysteresis loops were traced for all compositions showing a typical anti-ferroelectric nature. The breakdown field was found to decrease with Mn-doping. The energy storage density and efficiency were found to be 460 J/㎤ and ~ 63%, respectively, for 0.2% Mn-doped PLZT ceramics. The pyroelectric coefficient of PLZT ceramics shows an increase based on the amount of Mn-doping.
Ajeet Kumar,Jang Yuel Yoon,Atul Thakre,Mahesh Peddigari,정대용,Young-Min Kong,Jungho Ryu 한국세라믹학회 2019 한국세라믹학회지 Vol.56 No.4
In this study, the dielectric and polarization properties of manganese (Mn% = 0.0, 0.1, 0.2, 0.5) doped (Pb0.93La0.07)(Zr0.82Ti0.18)O3 (PLZT 7/82/18) anti-ferroelectric ceramics were studied for energy storage capacitor and pyroelectric applications. A systematic investigation demonstrated that the electric properties of PLZT 7/82/18 ceramics are affected significantly by the Mn-doping content. A maximum dielectric constant of ~ 2,128 at 1 kHz was found for 0.1% Mn-doped PLZT ceramics with a low dielectric loss of 0.018. The bipolar polarization versus electric field (P-E) hysteresis loops were traced for all compositions showing a typical anti-ferroelectric nature. The breakdown field was found to decrease with Mn-doping. The energy storage density and efficiency were found to be 460 J/cm3 and ~ 63%, respectively, for 0.2% Mn-doped PLZT ceramics. The pyroelectric coefficient of PLZT ceramics shows an increase based on the amount of Mn-doping.
$Pb(Mg_{1/3}Nb_{2/3})O_3-PbZrO_3$계 요업체의 전계 유기변위와 분극특성
김명철 한국세라믹학회 1997 한국세라믹학회지 Vol.34 No.6
Electrically-induced strain and polarization studies of the (1-x)Pb(Mg1/3Nb2/3)O3-PbZrO3 crystalline solutions have been done. Dielectric constants with temperature were investigated for 0$\leq$x$\leq$0.95. With increasing PbZrO3 content the transition maxima were found to move to higher temperature region and DPT (Diffused Phase Transition) properties were decreased for x$\leq$0.60. Phase transition between ferroelectric states and antiferroelectric states was confirmed for 0.93<x<0.95. Increase in the magnitude of the electrically-induced strains(S) and the degree of hysteresis were found with increasing PbArO3 contents. S was found to increase continuously with increasing PbZrO3 content, reaching a maximum value of ~1.3$\times$10-3 for 0.4<x<0.95.