Dielectric response and domain wall structure in the relaxor based mixed crystal system

基于弛豫剂的混晶体系中的介电响应和畴壁结构

• 批准号: 15540307
• 负责人: IWATA Makoto
• 金额: $ 2.3万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15540307/
• 关键词: relaxor; MPB; AFM; domain wall; ferroelectrics; phase transition; EFM; finger print pattern; ペロプスカイト

Domain wall structures in Pb(Zn_<1/3>Nb_<2/3>)O_<3^->xPbTiO_3(PZN_<-x>PT;x=0%,8%,20%) crystals were investigated using atomic force microscopy(AFM). Ferroelectric and ferroelastic domain wall structures were observed on the etched surface. In the rhombohedral phase, a zigzag domain wall structure was newly found. We showed that all of the ferroelastic domain wall structures observed in the tetragonal and rhombohedral phases can be explained by the Sapriel theory, and concluded that no ferroelectric charged domain wall exists in the PZN_<-x>PT(x=8%,20%) crystal without an external field. The symmetry of the crystal phase in PZN-8%PT at room temperature is discussed. It was also found that finger print pattern in PZN disappears after the poling process even in the weak field of about 50 V/cm which is about 1/20 of the coercive field.

利用原子力显微镜（AFM）研究了Pb(Zn_<1/3>Nb_<2/3>)O_<3^->xPbTiO_3（PZN_<-x>PT;x=0%,8%,20%）晶体的畴壁结构。在蚀刻表面观察到铁电畴和铁弹性畴壁结构。在菱形相中，新发现了锯齿状畴壁结构。结果表明，在四边形和菱面体相中观察到的所有铁弹性畴壁结构都可以用Sapriel理论解释，并得出在没有外场的PZN_<-x>PT（x=8%,20%）晶体中不存在铁电畴壁的结论。讨论了室温下PZN-8%PT晶相的对称性。在约为1/20强压场的50 V/cm弱电场中，PZN的指纹图谱在极化后消失。

项目成果

Ferroelectric thin films : basic properties and device physics for memory applications

• 发表时间: 2005
• 作者: 奥山 雅則;Y. Ishibashi

Phenomenology of Elastic Properties in Martensite Alloys

马氏体合金弹性性能的现象学

• 发表时间: 2003
• 期刊: Journal of the Physical Sosiety of Japan Vol.72, No.7
• 作者: Y.Ishibashi;M.Iwata
• 通讯作者: M.Iwata

Annealing Effect of the Phase Transition in PbIn_<1/2>Nb_<1/2>O_3 Crystal

PbIn_<1/2>Nb_<1/2>O_3晶体相变的退火效应

• 发表时间: 2004
• 期刊: Ferroelectrics 301
• 作者: M.Iwata;S.Katagiri;H.Orihara;I.Suzuki;M.Maeda;H.Ohwa;N.Yasuda;Y.Ishibashi
• 通讯作者: Y.Ishibashi

Domain-Wall Observation in Pb(Zn_<1/3>Nb_<2/3>)O_3-PbTiO_3 Solid Solutions by AFM

AFM 观察 Pb(Zn_<1/3>Nb_<2/3>)O_3-PbTiO_3 固溶体中的畴壁

• 发表时间: 2003
• 期刊: Transactions of the Materials Research Society of Japan Vol.28, No.1
• 作者: M.Iwata;K.Katsuraya;M.Maeda;I.Suzuki;Y.Naruse;H.Orihara;N.Yasuda;Y.Ishibashi
• 通讯作者: Y.Ishibashi

M.Iwata et al.: "Domain-Wall Observation in Pb(Zn_<1/3>Nb_<2/3>)O_3-PbTiO_3 Solid Solutions by AFM"Transactions of the Materials Research Society of Japan. 28・(1). 145-147 (2003)

M.Iwata等：“通过AFM观察Pb(Zn_<1/3>Nb_<2/3>)O_3-PbTiO_3固溶体中的畴壁”日本材料研究学会汇刊28·(1)。 .145-147 (2003)