Electromechanical properties of Mn-doped Pb(In_1/2Nb_1/2)O₃-Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ piezoelectric ceramics

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• 作者：Xudong Qi^a ; Enwei Sun^a ; ^{sunew@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Junjun Wang^a ; Rui Zhang^a ; ^{ruizhang_ccmst@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Bin Yang^a ; Wenwu Cao^a ; ^b
• 关键词：PIN-PMN-PT ceramic ; Piezoelectric ; Mechanical quality factor ; Internal bias field
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：1 November 2016
• 年：2016
• 卷：42
• 期：14
• 页码：15332-15337
• 全文大小：1878 K

文摘

The dielectric, piezoelectric, and ferroelectric properties of Mn-doped and undoped yPb(In_1/2Nb_1/2)O₃-(1−x−y)Pb(Mg_1/3Nb_2/3)O₃-xPbTiO₃ (PIN-PMN-PT) ternary ceramics with morphotropic phase boundary composition have been investigated. Mn-doped PIN-PMN-PT ceramics show obvious hardening characteristics. With 2 mol% Mn doping the mechanical quality factor Q_m can be increased to as high as 2000, while the electromechanical coupling factor (k_p=57%) is still comparable to that of the undoped counterpart. The internal bias field E_i was analyzed and calculated based on the P-E hysteresis loops for the Mn-doped PIN-PMN-PT ceramic. The relatively high Curie temperature, very high Q_m, and low dielectric loss make the Mn-doped PIN-PMN-PT ceramics good candidates for high power and high temperature electromechanical device applications.