Relation between material property and crystal structure of perovskite ferroelectrics under high electric field

高电场下钙钛矿铁电体材料性能与晶体结构的关系

• 批准号: 05650630
• 负责人: TSURUMI Takaaki
• 金额: $ 1.34万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650630/
• 关键词: Ferroelectricity; Crystal structure; Dielectricity; Electric field induced strain; Domain structure; Piezoelectricity; PZT; 強誘電体; 結晶構造解析; リートベルト法

The purpose of the present study was to develop a powder x-ray diffractometer which was capable of measuring under a high electric field, and to analyze structural changes in perovskite ferroelectrics under a high electric field.The x-ray diffraction intensities and diffraction angles of lead magnesium niobate(PMN)and lead ziconate titanate(PZT)ceramics were measured under the electric field up to 1.5kV/mm.The diffraction intensities and diffraction angles measured as a function of electric filed were analyzed with respect to the experimental results of electric field induced strain and piezoeiectric constant.The electric field induced change of diffraction angles, that is the strain of crystal lattice, were detected in PMN under a high electric field.The strain of crystal lattice was approximately consistent with the electrostrictive strain constant of ceramics.In the case of PZT,the change in the intensities of h00 and 001 diffractions were detected in place of diffraction angles.The change of intensities indicated that the reoriantation of ferroelectric 90 degree domains took place in the specemen.It was found that the electric field induced strain of PZT was the sum of the strain due to the piezoelectric effect and the strain due to the reorientation of ferroelectric 90 degree domains under a high electric field.

本研究的目的是研制一种能够在强电场下测量的粉末x射线衍射仪，并分析钙钛矿铁电体在强电场下的结构变化。在1.5kV/mm的电场下，测量了铌酸镁铅（PMN）和钛酸锌铅（PZT）陶瓷的x射线衍射强度和衍射角。结合电场感应应变和压电常数的实验结果，分析了衍射强度和衍射角随电场的变化规律。在强电场作用下，检测了PMN中电场引起的衍射角变化，即晶格应变。晶格应变与陶瓷的电致伸缩应变常数基本一致。在PZT的情况下，检测了h00和001衍射强度的变化，而不是衍射角。强度的变化表明铁电90度畴在试样中发生了重新定向。结果表明，电场致PZT的应变为高电场作用下由压电效应引起的应变和由铁电畴90度重取向引起的应变之和。

项目成果

T.Tsurumi,K.Soejima,T.Kamiya and M.Daimon: "Diffuse phase Transition of Pb(Mg1/3Nb2/3)O3" Ext.Abs.The 6th US-Jpn Seminor Dielectr.Piezo.Ceran. 215-218 (1993)

T.Tsurumi、K.Soejima、T.Kamiya 和 M.Daimon：“Pb(Mg1/3Nb2/3)O3 的扩散相变”Ext.Abs.第六届 US-Jpn Seminor Dielectr.Piezo.Ceran。

T.Tsurumi,K.Soejima,T.Kamiya and M.Daimon: "Mechanism of Diffuse Phase Transition in Relaxor Ferroelectrics" Jpn.J.Appl.Phys.(印刷中). (1993)

T.Tsurumi、K.Soejima、T.Kamiya 和 M.Daimon：“驰豫铁电体中的扩散相变机制”Jpn.J.Appl.Phys（出版中）。

T.Tsurumi, M.Daimon, T.Kamiya and Y.Hirano: "Crystal Structure and Hydration of Belite" Ceramic Transaction. 40. 19-25 (1994)

T.Tsurumi、M.Daimon、T.Kamiya 和 Y.Hirano：“贝利特的晶体结构和水合”陶瓷交易。

J.H.Kim,T.Tsurumi,T.Kamiya and M.Daimon: "Grauth of Bismuth Silicate Thim Film on Si and Its Diekitric Properties" J.Appl.Phys. 75. 2924-2928 (1994)

J.H.Kim、T.Tsurumi、T.Kamiya 和 M.Daimon：“Si 上硅酸铋 Thim 薄膜的 Grauth 及其介电特性”J.Appl.Phys。

T.Tsurumi, K.Soejima, T.Kam: "iya and M.Daimon Diffuse phase Transion of Pbi(Mg_<1/3>Nb_<2/3>)O_3" Ext.Abs.The 6th US-Jpn Seminor Dielectr.Piezo.Ceram.215-218 (1993)

T.Tsurumi、K.Soejima、T.Kam：“iya 和 M.Daimon Pbi(Mg_<1/3>Nb_<2/3>)O_3 的弥散相变” Ext.Abs.第六届 US-Jpn Seminor Dielectr