Simultaneous Control of Oxide Semiconductor Hetero-interface and Electrical Properties via Self-organized Phase Separation

通过自组织相分离同时控制氧化物半导体异质界面和电性能

• 批准号: 22656140
• 负责人: SEKINO Tohru
• 金额: $ 2.3万
• 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: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22656140/
• 关键词: セラミックス; ナノ材料; 表面・界面物性; 半導体物性; 自己組織化相分離; スピノーダル; ナノ構造・界面形成; 酸化スズ・酸化チタン

SnO_2-TiO_2 binary system is well known to exhibit an absolute solid solution and spinodal decomposition with characteristic lamellar structure. Such a phase separation is expected to forms self-organized structure with coherent and clean interface between different phases in nanometer scale. In this study, trivalent Fe^<3+> ion was doped to the system in order to control the both microstructures and electrical properties simultaneously. Through the experimental work, it was firstly revealed that self-organized phase-separation with characteristic periodic ordered-structure could be successfully obtained for the as-sintered samples without any annealing. The characteristic phase-separated microstructures and properties by doping to the binary oxide system was caused by the thermodynamical control of the system. It is thus concluded that the present materials design is useful and expectable to develop new-type of ceramic composite with nano-scaled hetero-structures.

SnO_2-TiO_2二元系具有绝对固溶体和旋节线分解的特征性片层结构。这种相分离有望在纳米尺度上形成不同相之间具有共格和清洁界面的自组织结构。在本研究中，三价Fe^<3+>离子被掺杂到系统中，以同时控制微结构和电性能。通过实验工作，首次揭示了自组织相分离的特征周期性有序结构可以成功地获得为烧结样品没有任何退火。二元氧化物体系掺杂后的特征相分离结构和性能是由体系的晶型控制引起的。研究结果表明，本文所提出的材料设计方法对开发新型的纳米异质结构陶瓷复合材料是有益的和可期待的。

项目成果

Fabrication and microstructure of electrically conductive AlN with high thermal conductivity

高导热率导电AlN的制备及微观结构

• DOI: 10.4028/www.scientific.net/kem.484.57
• 发表时间: 2011
• 期刊: Key Engineering Materials
• 作者: T.Kusunose;T.Sekino;K.Niihara
• 通讯作者: K.Niihara

希土類酸炭化物粒界相による高熱伝導性窒化アルミニウムセラミックスの電気伝導度制御

稀土碳氧化物晶界相控制高导热氮化铝陶瓷的电导率

• 发表时间: 2011
• 作者: 楠瀬尚史;関野徹;新原皓一
• 通讯作者: 新原皓一

常温での溶液化学反応場によるTi合金表面の低次元ナノ構造構築

室温下溶液化学反应场在钛合金表面构建低维纳米结构

• 发表时间: 2012
• 作者: 加賀晃樹;関野徹;西田尚敬;呉本晃一;他
• 通讯作者: 他

Temperature Dependence of Electrical and Thermal Properties for Perovskite-type Rare Earth Cobalt Oxide Solid Solutions Pr_<1-x> Tb_xCoO_3 and Their Metal-Insulator Behavior

钙钛矿型稀土钴氧化物固溶体Pr_<1-x> Tb_xCoO_3 电性能和热性能的温度依赖性及其金属-绝缘体行为

• 发表时间: 2010
• 期刊: J. Alloy. Comp
• 作者: H. Hashimoto;T. Kusunose;T. Sekino
• 通讯作者: T. Sekino

Fabrication of Fe-doped SnO_2-TiO_2 Spinodal Phase-Separated System and Its Semiconductive Properties, International Conference on Modern Materials and Technologies-

Fe掺杂SnO_2-TiO_2旋节线相分离体系的制备及其半导体性能，现代材料与技术国际会议-

• 发表时间: 2010
• 作者: M. Hashimoto;T. Sekino;S.-I. Tanaka;T. Shimizu;T. Kusunose
• 通讯作者: T. Kusunose