Effect of sintering atmosphere on ferroelectric properties of SBT ferroelectric ceramics

Feng-Qing Zhang; Chunzhen Li; Haiwen Li; Xiaodong Guo; Suhua Fan

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자료유형: 학술저널

저자정보: Feng-Qing Zhang (Shandong Jianzhu University) Chunzhen Li (Shandong Academy of Building Research) Haiwen Li (Shandong Academy of Building Research) Xiaodong Guo (Shandong Jianzhu University) Suhua Fan (Shandong Jianzhu University)

저널정보: 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제19권 제2호

발행연도: 2018.4

수록면: 101 - 104 (4page)

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The effect of sintering atmosphere on the properties of SBT ferroelectric ceramics was studied by sol-gel method and interlayerannealing process. It was found that the sintered samples in oxygen atmosphere had more a-axis-oriented grains and moregrains which are perpendicular to the plane than those in air atmosphere. The Curie temperature of the samples obtained bysintering in oxygen and air atmosphere is Tc = 273 oC and Tc = 265 oC, and the conductivating energy Ea = 0.94 eV and Ea =0.66 eV, respectively. The residual polarization intensity of the samples sintered in air atmosphere is 2Pr = 15.3 μC/cm2, thecorresponding coercive field is Ec = 51 kV/cm; the residual polarization intensity of the sample sintered in oxygen atmosphereis 2Pr = 16.6 μC/cm2, and the corresponding coercive field is about Ec = 45 kV/cm. That is because the samples sintered in theoxygen atmosphere has larger lattice distortion, lower oxygen vacancy concentration and larger a-axis oriented grains, whichare favorable for the increase of the remnant polarization and reduction of the coercive field.

#Sintering atmosphere #SBT #Ferroelectric properties #Activation energy

참고문헌 (24)

참고문헌 신청

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