二维单晶纳米结构及其非易失性铁电随机存储器机理研究

项目名称： 二维单晶纳米结构及其非易失性铁电随机存储器机理研究

项目编号： No.61274004

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 徐刚

作者单位： 浙江大学

项目金额： 70万元

中文摘要： 紧密围绕四方钙钛矿结构铁电氧化物二维单晶纳米结构关键制备技术，及其非易失性铁电随机存储器机理，以高密度非易失性铁电随机存储器为前瞻性目标，应用表面修饰剂选择性吸附设计和水热反应技术，实现四方钙钛矿结构Pb(Zr,Ti)O3、PbTiO3、BaTiO3等铁电氧化物单晶纳米片的二维生长；应用静电力扫描探针EFM技术，实现铁电氧化物二维单晶纳米片的信息写入和读出。研究表面修饰剂的选择性吸附机制和规律，弄清表面修饰剂与水热反应条件的协同作用规律，实现四方钙钛矿结构二维单晶纳米片的尺寸可控制备；研究二维单晶纳米片的铁电纳米尺寸效应，阐明二维单晶纳米结构与信息写入和读出的关联，弄清二维单晶纳米结构非易失性铁电随机存储器机理，为设计和研究高密度非易失性铁电随机存储器提供理论指导和依据。

中文关键词： 铁电；钙钛矿；二维纳米结构；制备；非易失性铁电存储器

英文摘要： The applied researching project focuses closely on the key preparation technique, and non-volatile ferroelectric random access memory (FERAM) mechanism of the two-dimensional (2D) single-crystal nanostructures of the tetragonal perovskite oxides for pursuing the non-volatile FERAM of high storage density.Hydrothermal reaction technique is employed to realize the 2D growth of the tetragonal perovskite ferroelectric oxide, such as Pb(Zr,Ti)O3, PbTiO3, BaTiO3,single-crystal nanosheets assisted with the designed adsorption of modifiers.Electrostatic force microscope (EFM) is used to perform the encoding information on the 2D ferroelectric oxide single-crystal nanosheets.In order to realize the scale-controlled synthesis of the single-crystal tetragonal perovskite nanosheets, the adsorption mechanism and rule, as well as the cooperation with hydrothermal reaction conditions of the modifiers will be investigated and understood.Further researching works are performed on the ferroelectric nanoscale effects,for illustrating the relationship of 2D single-crystal nanostructure and the encoding informations, and understanding the non-volatile ferroelectric random access memory mechanism, which would prompt the reseach and design of the high storage non-volatile FERAM.

英文关键词： Ferroelectrics；Perovskite；Two-dimensional nanostructures；Preparation；Non-volatile ferroelectric random access memory