Enhanced Electrical Properties of Quenched (1 鈥?x)Bi1鈥?i>ySmyFeO3鈥?i>xBiScO3 Lead-Free Ceramics

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• 作者：Jing Lv ; Jiagang Wu ; Wenjuan Wu
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：September 10, 2015
• 年：2015
• 卷：119
• 期：36
• 页码：21105-21115
• 全文大小：930K
• ISSN：1932-7455

文摘

In this work, the (1 鈥?x)Bi_1鈥?i>ySm_yFeO₃鈥?i>xBiScO₃ lead-free ceramics were prepared by the rapid thermal quenching technique, and the effects of compositions and preparation processes on their phase structure, microstructure, and electrical properties were investigated. By tuning the compositions, a high d₃₃ of 鈭?1 pC/N and a low dielectric loss of 鈭?.25% can be attained in the ceramics with x = 0.05 and y = 0.05, which is superior to the previously reported results. In addition, a saturated P鈥?i>E loop with a P_r of 14.2 渭C/cm² and an E_C of 53.1 kV/cm can be witnessed in the ceramics with x = 0.05 and y = 0. By studying the relationships between d₃₃ and different sintering methods, we can find that the quenching method can effectively promote the piezoelectricity of the ceramics. As a result, the systematic investigations on the (1 鈥?x)Bi_1鈥?i>ySm_yFeO₃鈥?i>xBiScO₃ ceramics can benefit the developments of bismuth ferrite materials in the field of high-temperature piezoelectrics.