Enhancement of spontaneous polarization in lead zirconate titanate thin films by Dy3+ substitution

Spontaneous polarization can be enhanced by increasing the crystal anisotropy of tetragonal Pb(Zr,Ti)O3 [PZT] lattice by Zr and Ti-site substitution with Dy3+ cations. Spontaneous polarization (Ps) in epitaxial film of 2% Dy3+-substituted tetragonal Pb(Zr0.40Ti0.60)O3 [Dy–PZT] was compared with that of nonsubstituted Pb(Zr0.40Ti0.60)O3 [PZT] to investigate intrinsic contribution of the Dy3+ substituion to the Ps improvement. Epitaxial thin films of PZT and Dy–PZT with (111) orientations were grown on (111)cSrRuO3//(111)Pt//(100)YSZ//(100)Si substrates by chemical solution deposition. The saturated polarization values of PZT and Dy-PZT films with (111) orientation were 41 and 48 µC/cm2, respectively. The estimated Ps values of PZT and Dy–PZT films from the saturation polarization values were 71 and 84 µC/cm2, respectively. The Ps value of this PZT was in good agreement with previous reports. The increase in Ps of the epitaxial Dy3+-substituted PZT film is attributed to the enhancement of the crystal anisotropy, i.e., tetragonality, of the tetragonal PZT lattice. This shows that the enhancement of the ferroelectricity of the tetragonal PZT films can be achieved by ion substitution, just as it can in Bi4Ti3O12-based film

Hiroshima’s Complex Relationship with Tourism

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Teaching and Assessing Classroom Writing

教室でのライティング活動は、準備、下書き、推敲と多く、完成した作品を評価した後のフィードバックも含めると更に多くの工程から成り立っている。教育上や指導上の注意点をまとめてみた。departmental bulletin pape

クロニジンの経口投与は精子形成過程において成熟停止を来した乏精子症患者の造精機能を促進させる

浜松医科大学学位論文　医博論第406号(平成１７年１０月２１日

北信地域における補修を必要とする橋梁点検調査

applicationIt is generally proposed to set aim 200 years as span of fatigue design. It is significant to keep the good condition of bridge for a long time. This study investigates present inspection of charge and maintenance. We experiment about some examples of actual bridges with a crack. We report these researches in Hokusin area.departmental bulletin pape

Mongolia's International Trade: Impact of Its Geographical Location

This paper examines the influence of Mongolia's landlocked location between Russia and China on the country's international trade patterns through the use of an augmented gravity model. The results are basically consistent with the prediction of the gravity model with some unexpected results on per capita GDP and the WTO dummy. Further, this paper discusses relevant policy implications.departmental bulletin pape

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【司書課程から】障害学習概論

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A study of the Japanese small scale migrant fishers of "Ezochi" under the divisional policy of "Ezogashima" in early modern Times

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A Proposal for Current Status of OUC Students with Apathetic/Passive Attitude and Lesson Improvement

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