Fabrication of self-assembled lateral nanostructures and their applications for magnetic materials
自组装横向纳米结构的制备及其在磁性材料中的应用
基本信息
- 批准号:16206067
- 负责人:
- 金额:$ 32.12万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (A)
- 财政年份:2004
- 资助国家:日本
- 起止时间:2004 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Magnetic nanostructures with lateral modulation were prepared by molecular beam epitaxy and UHV magnetron sputtering, and their magnetic, magnetotransport and magnetooptical properties etc. were investigated. The main results obtained in this study are as follows:1.Self assembled Fe nanoparticles were formed on a thin MgO layer which is epitaxially grown on a Fe buffer with an optimum thickness, and it was found by scanning tunneling microscopy observations that the Fe nanoparticles were alingned in a [110] direction. Cross sectional high-resolution electron microscopy observation suggested that an aligned pyramid structure of the Fe buffer caused the lateral alignment of Fe nanoparticles.2.Preparation of FePt films on FeAl single crystal surfaces with nano.pores were attempted by using both bulk and thin film processes. Magnetic properties of obtained FePt films were measured and the effects of pores on properties of FePt films were systematically investigated.3.By optimized heat treatments for alternate stacking of FePt and MgO, tetrahedral FePt nanoparticles embedded partially in MgO were successfully synthesized. The formed FePt nanoparticles showed a large coercive force, suggesting an application of magnetic probe microscopy.4.Novel surface structures such as rectangular holes and network structures were successfully prepared for NiO thin films by oxygen reactive sputtering. The observed structures are expected to be used for a template for lateral nanostructures.5.Surface phase separation was investigated for ultrathin Fe-Au alloys deposited on a Pt(100) surface. A few kinds of novel lateral nanostructures were observed by scanning tunneling micropcopy.
采用分子束外延和超高真空磁控溅射技术制备了具有横向调制功能的磁性纳米结构,并对其磁性、磁输运和磁光等性质进行了研究。本研究的主要结果如下:1.在Fe缓冲层上外延生长的MgO薄膜上形成了自组装Fe纳米颗粒,扫描隧道显微镜观察发现Fe纳米颗粒沿[110]方向排列。截面高分辨电镜观察表明,Fe缓冲层的金字塔结构导致Fe纳米颗粒的横向排列。2.采用体相法和薄膜法在具有纳米孔的FeAl单晶表面制备了FePt薄膜。通过优化热处理工艺,使FePt和MgO交替堆叠,成功制备了部分嵌入MgO中的四面体FePt纳米颗粒。制备的FePt纳米颗粒具有很大的矫顽力,表明磁性探针显微镜的应用。4.采用氧反应溅射法成功制备了NiO薄膜的矩形孔和网状结构等新型表面结构。所观察到的结构有望用作侧向纳米结构的模板。5.研究了沉积在Pt(100)表面的Fe-Au合金的表面相分离。利用扫描隧道显微镜观察到了几种新型的横向纳米结构。
项目成果
期刊论文数量(21)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Nucleation-type magentization behavior in FePt(001) particulate films
FePt(001)颗粒薄膜中的成核型磁化行为
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Nakamichi;N.;Kita;M.;Ito;S.;Yamashino;T.;Mizuno;T.;T.Shima
- 通讯作者:T.Shima
Improvement of hard magnetic properties in microfabricated L1(0)-FePt dot arrays upon post-annealing
后退火后微加工 L1(0)-FePt 点阵列中硬磁性能的改善
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:T.Shima;K.Takanashi;Y.K.Takahashi;K.Hono;T.Shima;T.Shima;H.Ito;T.Seki
- 通讯作者:T.Seki
Enhanced spin acuumulation and novel magnetotransport in nanoparticles
纳米粒子中增强的自旋累积和新型磁传输
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:S.Kawaguchi;K.C.Namiki;S.Ohshio;J.Nishino;H.Saitoh;A. NOZAKI;K.Yakushiji et al.
- 通讯作者:K.Yakushiji et al.
Control of the size for octahedral FePt nanoparticles and their magnetic properties
八面体 FePt 纳米颗粒的尺寸控制及其磁性能
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:H.Ito;K.Oda;Y.Kawamura;H.Saitoh;Kuniaki Mihara;H.Ito
- 通讯作者:H.Ito
Magnetic properties of L10 ordered FePt films prepared on a Fe-Si-B-Nb-Cu soft magnetic underlayer
Fe-Si-B-Nb-Cu 软磁底层上制备的 L10 有序 FePt 薄膜的磁性能
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:中西仁美;土井健司;柴田久;杉山郁夫;寺部慎太郎;Riken HOMMA;M.Ohtsu 共著;I.Fujii
- 通讯作者:I.Fujii
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TAKANASHI Koki其他文献
TAKANASHI Koki的其他文献
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金属超晶格的复兴
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$ 32.12万 - 项目类别:
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19360311 - 财政年份:2007
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- 批准号:
12555183 - 财政年份:2000
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- 批准号:
12450256 - 财政年份:2000
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09555205 - 财政年份:1997
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