Electric field control memory operated at room temperature using multiferroic BiFeO3

使用多铁性 BiFeO3 在室温下运行的电场控制存储器

• 批准号: 23656025
• 负责人: NAGANUMA Hiroshi
• 金额: $ 2.58万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656025/
• 关键词: マルチフェロイクス; 電気磁気効果; ME 効果; BiFeO_3; 低消費電力; BiFeO3; 電界効果; 磁化反転; 低電圧; CoFe2O4; 電界制御

We prepared BiFeO_3/CoFe_2O_4 bilayer, and magnetic domain of CoFe_2O_4 was successfully reversed by an applying electric field to BiFeO_3 at room temperature. Our experimental plan was achieved 100%. Moreover, we could reduce the voltage by 1/20 using the vertical stacking structure, and small magnetic domain with 150 nm in diameter was successfully reversed in this project. This means that these research results are surpass to our expectation in first proposal

我们制备了BiFeO_3/CoFe_2O_4双层膜，并通过在室温下向BiFeO_3施加电场成功反转了CoFe_2O_4的磁畴。我们的实验计划100%实现了。此外，利用垂直堆叠结构，我们可以将电压降低1/20，并且在该项目中成功逆转了直径150 nm的小磁畴。这意味着这些研究结果超出了我们在第一个提案中的预期

项目成果

菱面体構造を有するBiFeO_3/CoFe二層膜の作製およびその磁気特性

菱形结构BiFeO_3/CoFe双层薄膜的制备及其磁性能

• 发表时间: 2012
• 作者: Keita Sone;Masaki Ito;Sho Sekiguchi;Hiroshi Naganuma;Takamichi Miyazaki;Takashi Nakajima;and Sochiro Okamura;曽根圭太,伊藤正樹,永沼博,宮崎孝道,中嶋宇史,岡村総一郎;Yu Tian,永沼博,Han Xiu-Fung,安藤 康夫;向山広記,永沼博,大兼幹彦,安藤康夫
• 通讯作者: 向山広記,永沼博,大兼幹彦,安藤康夫

Large refractive index in Bi(Fe0.9Co0.1)O3 epitaxial films

Bi(Fe0.9Co0.1)O3 外延薄膜的大折射率

• 作者: Hiromi Shima;Ken Nishida;Tkashi Yamamoto;Toshiyasu Tadokoro;Koichi Tsutsumi;Michio Suzuki;Hiroshi Naganuma
• 通讯作者: Hiroshi Naganuma

Large refractive index in BiFeO3-BiCoO3 epitaxial films

BiFeO3-BiCoO3 外延薄膜的大折射率

• DOI: 10.1063/1.4794878
• 发表时间: 2013
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: Hiromi Shima;Ken Nishida;Takashi Yamamoto;Toshiyasu Tadokoro;Koichi Tsutsumi;Michio Suzuki;and Hiroshi Naganuma
• 通讯作者: and Hiroshi Naganuma

Enhancement of magnetoresistance using CoFe/Ru/CoFe synthetic ferrimagnetic pinned layer in BiFeO3 based spin-valves

• DOI: 10.1063/1.4745504
• 发表时间: 2012-08
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: H. Naganuma;I. Bae;T. Miyazaki;M. Kubota;N. Inami;Y. Kawada;M. Oogane;S. Mizukami;Xiufeng Han-Xiufen

Microstructure and magnetic properties of BiFeO3-nanoparticles CoFe2O4 composite thin film

BiFeO3-纳米粒子CoFe2O4复合薄膜的微观结构与磁性能

• 作者: Keita Sone;Masaki Ito;Sho Sekiguchi;Hiroshi Naganuma;Takamichi Miyazaki;Takashi Nakajima;and Sochiro Okamura
• 通讯作者: and Sochiro Okamura