FORMATION MECHANISM OF SPOTANEOUS SUPERLATTICE BY APPLICATION OFMAGNETIC FIELD DURING DEPOSITION AND STRUCTURE INDUCED FERROELECTRICITY

沉积过程中施加磁场和结构诱导铁电性自发超晶格的形成机制

• 批准号: 22360270
• 负责人: WAKIYA Naoki
• 金额: $ 12.23万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22360270/
• 关键词: PLD; 磁場印加; SrTiO3; 強誘電体; 超格子; 強誘電性; SrTiO_3

Spontaneous formation of superlattice is observed for homoepitaxially grown SrTiO3thin film with Sr-excess composition deposited on Nb-SrTiO3(001) single crystal substrate when the film was deposited using PLD in the magnetic field. It was clarified that this phenomenon is caused by surface-directed spinodal decomposition. This film shows ferroelectricity even at room temperature. This phenomenon would be caused by the internal strain that forms at the interface of layers with different composition.

当在磁场中使用 PLD 沉积薄膜时，在 Nb-SrTiO3(001) 单晶衬底上沉积的具有过量 Sr 成分的同质外延生长的 SrTiO3 薄膜中，观察到超晶格的自发形成。已澄清该现象是由表面定向旋节线分解引起的。即使在室温下，该薄膜也显示出铁电性。这种现象是由不同成分的层界面处形成的内应变引起的。

项目成果

Enhanced electrical properties of ferroelectric thin films with electric field induced domain control

通过电场感应域控制增强铁电薄膜的电性能

• 发表时间: 2010
• 期刊: Mater.Sci.Eng.B
• 作者: T.Noda;N.Sakamoto;N.Wakiya;H.Suzuki;K.Komaki
• 通讯作者: K.Komaki

ダイナミックオーロラPLD法で作製したNb-SrTiO3薄膜における自発的に生成した超格子薄膜の周期に対する時効効果

动态极光PLD法制备Nb-SrTiO3薄膜时效对自发超晶格薄膜周期的影响

• 发表时间: 2013
• 作者: 石井隼人;坂元尚紀;篠崎和夫;鈴木久男;脇谷尚樹
• 通讯作者: 脇谷尚樹

Fabrication of two-dimensional close-packed shell structure in ceramic thin films

• DOI: 10.1088/1468-6996/12/3/034406
• 发表时间: 2011-05
• 期刊: Science and Technology of Advanced Materials
• 影响因子: 5.5
• 作者: R. Usami;N. Sakamoto;K. Shinozaki;Hisao Suzuki;N. Wakiya

Strain-Induced Electrical Properties of Lead Zirconate Titanate Thin Films on a Si wafer with Controlled Oxide Electrode Structure

具有受控氧化物电极结构的硅片上锆钛酸铅薄膜的应变诱导电性能

• DOI: 10.1143/jjap.51.09la13
• 发表时间: 2012
• 期刊: Jpn. J. Appl. Phys
• 作者: Tomoya Ohno;Masaaki Ishiduka;Takashi Arai;Hiroaki. Yanagida;Takeshi. Matsuda;Naonori Sakamoto;Naoki Wakiyaand Hisao Suzuki
• 通讯作者: Naoki Wakiyaand Hisao Suzuki

Formation of La1-xSrxMnO3 thin films with spontaneous superlattice structure by pulsed laser

脉冲激光形成自发超晶格结构La1-xSrxMnO3薄膜

• 发表时间: 2012
• 作者: D. Suzuki;N. Sakamoto;K. Shinozaki;H. Suzuki;N. Wakiya
• 通讯作者: N. Wakiya