Creation of ferroelectric relaxor superlattices with symmetry braking and brain mimetic memory

创建具有对称制动和脑模拟记忆的铁电弛豫超晶格

基本信息

项目摘要

Superlattices of transition metal oxides have been formed by a laser Molecular Beam Epitaxy (MBE) technique connected with RHEED monitoring system. The superlattices of magnetics have been constructed on SrTiO_3(100), (110) and (111) surfaces. These surface selection enables us to control the three dimensional positioning of atoms and spin. In the case of LaCrO_3/LaFeO_3 superlattices on (111) surface, ferromagnetism has been realized for the first time. In the case of LaMnO_3/LaFeO_3 superlattices, on the other hand, spin frustration is expected competing with ferromagnetism of self-doped LaMnO_3 and anti-ferromagnetism of LaFeO_3 on SrTiO_3 (100) surface. Spin glass phase transition (casp shape in magnetization vs. temperature measurements) is observed in the case of LaMnO_3/LaFeO_3 superlattices. It is due to the spin frustration between ferromagnetic couping in LaMnO_3 layer and antiferromagnetic coupling in LaFeO_3 layer.
采用激光分子束外延(MBE)技术和RHEED监测系统相结合的方法制备了过渡金属氧化物超晶格。在SrTiO_3(100)、(110)和(111)表面上构筑了磁性超晶格。这些表面选择使我们能够控制原子和自旋的三维定位。在LaCrO_3/LaFeO_3(111)面超晶格中,首次实现了铁磁性。在LaMnO_3/LaFeO_3超晶格中,自旋阻挫与自掺杂LaMnO_3的铁磁性和LaFeO_3在SrTiO_3(100)表面的反铁磁性相互竞争。在LaMnO_3/LaFeO_3超晶格中观察到自旋玻璃相变(casp形状的磁化强度与温度的关系)。这是由于LaMnO_3层中的铁磁耦合和LaFeO_3层中的反铁磁耦合之间的自旋阻挫作用造成的。

项目成果

期刊论文数量(67)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Dielectric and ferroelectric properties of c-axis oriented strontium bismuth tantalate thin films applied transverse electric fields
横向电场作用下c轴取向钽酸锶铋薄膜的介电和铁电性能
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    K. Kotani;A. Fujimori;H. Tabata
  • 通讯作者:
    H. Tabata
Photoemission study of poly(dA)-poly(dT) DNA : Experimental and theoretical approach to the electronic density of states
聚 (dA)-聚 (dT) DNA 的光电发射研究:电子态密度的实验和理论方法
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H.Matsui;K.Kotani;H.Matsui;M.Kobayashi;H.Matsui;I.Hirata;H.Matsui;H.Tabata;M.Seki;M.Seki;H.Wadati
  • 通讯作者:
    H.Wadati
Simultaneous control of growth mode and ferromagnetic ordering in Co-doped ZnO layers with Zn polarity
  • DOI:
    10.1103/physrevb.75.014438
  • 发表时间:
    2007-01
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    H. Matsui;H. Tabata
  • 通讯作者:
    H. Matsui;H. Tabata
High-energy spectroscopy study of the ferromagnetic diluted magnetic semiconductor Zn1-xVxO
  • DOI:
    10.1016/j.physb.2004.06.037
  • 发表时间:
    2004-09
  • 期刊:
  • 影响因子:
    2.8
  • 作者:
    Y. Ishida;J. I. Hwang;Michikazu Kobayashi;A. Fujimori;H. Saeki;H. Tabata;T. Kawai
  • 通讯作者:
    Y. Ishida;J. I. Hwang;Michikazu Kobayashi;A. Fujimori;H. Saeki;H. Tabata;T. Kawai
Transparent magnetic semiconductors based on ZnO
  • DOI:
    10.1088/0953-8984/16/48/008
  • 发表时间:
    2004-11
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H. Saeki;H. Matsui;T. Kawai;H. Tabata
  • 通讯作者:
    H. Saeki;H. Matsui;T. Kawai;H. Tabata
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TABATA Hitoshi其他文献

TABATA Hitoshi的其他文献

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{{ truncateString('TABATA Hitoshi', 18)}}的其他基金

Ultra high sensitive skin gas sensors for wearable health condition monitoring
用于可穿戴健康状况监测的超高灵敏度皮肤气体传感器
  • 批准号:
    19K21962
  • 财政年份:
    2019
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Challenging Research (Exploratory)
Creation of ultra low energy consumption devices by bio mimicry
通过仿生创造超低能耗设备
  • 批准号:
    17H01261
  • 财政年份:
    2017
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
High efficient solar energy conversion by controlling of spin ordering and surface polarity
通过控制自旋有序和表面极性实现高效太阳能转换
  • 批准号:
    15K13940
  • 财政年份:
    2015
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Fabrication of information processing devices learned by bio mimetic stochastic resonance
通过仿生随机共振学习的信息处理装置的制造
  • 批准号:
    23656209
  • 财政年份:
    2011
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Multiferro fusion spintronics by ultimately controlled technique.
通过最终控制技术实现多铁融合自旋电子学。
  • 批准号:
    21246050
  • 财政年份:
    2009
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Self organized 3D nano fabrication and multi-ferroic devices
自组织 3D 纳米制造和多铁性器件
  • 批准号:
    18063014
  • 财政年份:
    2006
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas
Sensors of Super Five Sense and Brain Mimetic Devices Formed by Organic/Inorganic Hetero Structure
有机/无机异质结构形成的超五传感及类脑器件传感器
  • 批准号:
    14592002
  • 财政年份:
    2002
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Creation of New memory devices with functional harmonized artificial lattices and elucidation of phase transition
创建具有功能协调的人工晶格的新型存储器件并阐明相变
  • 批准号:
    11650323
  • 财政年份:
    1999
  • 资助金额:
    $ 9.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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钛铁矿型钛酸盐人工超晶格中各种磁序的研究与控制
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Quantum Criticality and Unconventional Superconductivity in Heavy-fermion Artificial Superlattices
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钙钛矿氧化物中人工超晶格的取向/堆叠控制及其低温还原/氧化
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