Preparation of Ferromagnetic Nano-dot system and Its Magneto-Resistance
铁磁纳米点体系的制备及其磁电阻
基本信息
- 批准号:13650708
- 负责人:
- 金额:$ 2.75万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2001
- 资助国家:日本
- 起止时间:2001 至 2003
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
For the study of (spin dependent) electric properties of nano materials, the production of nano-electrodes, the design of special attatchment for transmission electron microscopy (TEM) and the quantum conductance (QC) of ferromagnetic nano-particle systems and nano-wires were investigated. The production of nano-structures and selection of the conduction paths were successfully carried out inside TEM. The set of results will contribute to the future research on the spin dependent conduction of nano-structured materials.1.Production of Nano-Electrodes : By the sputtering method using diamond particles as the mask, electrodes having nano-scaled tip and the length of several tens of μm could reproducibly prepared. Using these electrodes, conduction experiments inside TEM became possible.2.Design and Production of TEM Holders for Nano-Conduction Experiments : TEM holders to measure the nano-current between nano-dots were produced. Two electrodes can be loaded in the holder. Nano-manufactun … More ng and adequate selection of measuring positions were realized in nano-scale.3.Electric Measurements of Limited Number of Fe Nano-Particles : Using the 10nm thick Fe-SrF_2 films as the sample where Fe particles are embedded in SrF_2, the Coulomb blockade effect was detected. The sample was attached by the Au counter electrode, I-V measurements were performed at room temperature. When the contact area was less than 700nm^2, the Coulomb blocade of 0.4V was detected. The number of particles in this area is about 10.4.Quantum Conductance of Au and Fe Nano-Wires : Nano-wies of non-magnetic Au and ferro-magnetic Fe were studied inside TEM. In both cases, QC with half integer steps was recognized. The appearance of this phenomenon was influenced by the broken speed of wires, the magnetic field and the bias voltage. By adequate selection of experimental conditions, the wire showing the half integer step was kept more than 1 second. This is long enough to study the relationship between the wire shape and QC. Less
为了研究纳米材料的(自旋相关)电学性质,研究了纳米电极的制备、电子显微镜专用附件的设计以及铁磁性纳米粒子系统和纳米线的量子电导(QC)。在透射电子显微镜中成功地进行了纳米结构的制备和导电路径的选择。1.纳米电极的制备:采用金刚石颗粒为掩模的溅射方法,可重复制备出针尖尺寸为纳米级、长度为几十μm的电极。2.用于纳米导电实验的透射电子显微镜夹持器的设计与制造:研制了用于测量纳米点间纳米电流的透射电子显微镜夹持器。两个电极可装入夹持器。纳米制造的…3.有限数量的Fe纳米粒子的电学测量:以10 nm厚的Fe-SRF_2薄膜为样品,在SrF_2中嵌入Fe粒子,检测到了库仑阻塞效应。样品用金对电极固定,在室温下进行I-V测量。当接触面积小于700 nm~2时,检测到0.4V的库仑阻塞。Au和Fe纳米线的量子电导:用透射电子显微镜研究了非磁性Au和铁磁性Fe的纳米线。在这两种情况下,都识别出具有半整数步长的QC。这一现象的出现受断丝速度、磁场和偏置电压的影响。通过对实验条件的适当选择,使显示半整数阶跃的焊丝保持在1秒以上。这段时间足以研究钢丝形状和质量控制之间的关系。较少
项目成果
期刊论文数量(34)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
R.Hirose: "Tip production technique to form ferromagnetic nanodots"Materials Science and Eng. C. 23. 927-930 (2003)
R.Hirose:“形成铁磁纳米点的尖端生产技术”材料科学与工程。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
広瀬龍介: "イオンスパッタによる探針作製手法の開発"精密工学会秋季大会講演論文集. 148 (2002)
广濑龙介:“使用离子溅射的探针制造方法的开发”日本精密工程学会秋季会议记录148(2002)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
M.Arita et al.: "Changes in magnetic microstructure and resistivity of permalloy thin films"Proc.Symp.Adv.Res.Energy Technol.. 2003. 293-294 (2003)
M.Arita 等人:“坡莫合金薄膜的磁性微观结构和电阻率的变化”Proc.Symp.Adv.Res.Energy Technol.. 2003. 293-294 (2003)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
小野貴弘: "パーマロイ薄膜における磁気微細構造と磁気抵抗効果の同時計測"精密工学会北海道支部学術講演会講演論文集. 53-54 (2002)
Takahiro Ono:“坡莫合金薄膜中磁性精细结构和磁阻效应的同时测量”日本精密工程学会北海道分会学术会议记录53-54(2002)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
有田正志: "La_<0.7>Ca_<0.3>MnO_3薄膜の微細構造"まてりあ(Materia Japan). 40・12. 1017 (2002)
有田正史:“La_<0.7>Ca_<0.3>MnO_3 薄膜的精细结构”(Materia Japan) 40・12(2002 年)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
ARITA Masashi其他文献
ARITA Masashi的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('ARITA Masashi', 18)}}的其他基金
Development of in-situ TEM measurement system and its application to nanoelectronics
原位TEM测量系统的研制及其在纳米电子学中的应用
- 批准号:
21560681 - 财政年份:2009
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)