Crystal Structure and Physical Properties of Artificial Metallic Multilayrs with Non-equilibrium Crystal Structure of 3d Trandition Metals
3d 传统金属非平衡晶体结构人工金属多层膜的晶体结构和物理性能
基本信息
- 批准号:06452311
- 负责人:
- 金额:$ 4.74万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:1994
- 资助国家:日本
- 起止时间:1994 至 1996
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Artificial metallic multilayrs of [fcc-Fe/Cu], [gamma-Fe/Cu(Ni)], [gamma-Fe(Ni/Cu], [Fcc-Cr/Cu], [bct-Ni/Fe], [bcc-Cu/Fe], [bct-Ni/Cr], [bcc-Cu/Fe], [bcc-Fe/Cr], [bct-Ni/Cr], [hcp-Co/Cr], [fcc-Au/bcc-Fe], [bct-Cu/bct-Fe(Ni)], [bct-Cu/bcc-Fe(Co)] were prepared by MBE or IBS method.The rach atomic layrs in the multilayr were controlled within several atomic layrs. non-equilibrium crystal structure and the transition to the equilibrium state were precisely anakyzed. The magnetic properties and magnetoresistance were inverstigated . The main results were as follows.1. The fcc-Fe transforms to high spin state when Fe is deposited on Cu (001) because of restriction of interatomic distance between Cu atoms at interfaces. The application of high spin to low spin state transtion of fcc-Fe to the magnetic recording media were investigated.2. Ni layr less than 3ML deposited on bcc-Fe (001) or bcc-Cr (001) is bct structure. And the Ni layr more than 4ML takes c(2+2) like structure and finally the crystal structure of Ni layr transforms to a domain structure of fcc-Ni. The magnetic moment of bct-Ni is more than that of bulk fcc-Ni. The magnetic properties of bcc-Cu and fcc-Cr are non-ferromagnetism.3. Crystal structures of Fe, Co and Ni on bcc-Cr (001) were bcc, hcp, bct within several ML,respectively. Magnetoresistance (MR) ratio of these multilayrs were 116%, 2%, and less than 0.1% for Fe, Co and Ni, resoectively. The origin of the large difference in MR ratio were discussed considering the interface effect.4. The MR ratio of the annealed [bcc-fcc] multilayrs were increased up to twice comparing with as-deposited films.
采用MBE或IBS法制备了[fcc-Fe/Cu]、[γ -Fe/Cu(Ni)]、[γ -Fe(Ni)]、[Fcc-Cr/Cu]、[bcc- Ni/Cr]、[bcc-Cu/Fe]、[bcc- Ni/Cr]、[hcp-Co/Cr]、[fcc-Au/bcc-Fe]、[bcc-Cu/ bcc-Fe(Ni)]、[bcc-Cu/ bcc-Fe(Co)]等金属多层膜。多层结构中的原子层被控制在几个原子层内。对非平衡态晶体结构和向平衡态过渡进行了精确分析。研究了材料的磁性能和磁阻。主要结果如下:1。由于界面处Cu原子间原子间距离的限制,Fe沉积在Cu(001)上时,fcc-Fe转变为高自旋态。研究了fcc-Fe高自旋到低自旋态跃迁在磁记录介质中的应用。bcc-Fe(001)或bcc-Cr(001)上沉积的Ni层小于3ML为bct结构。大于4ML的Ni层呈c(2+2)状结构,最终Ni层的晶体结构转变为fcc-Ni的畴结构。bct-Ni的磁矩大于块状fcc-Ni的磁矩。bcc-Cu和fcc-Cr的磁性均为非铁磁性。bcc- cr(001)上Fe、Co和Ni的晶体结构在数ML内分别为bcc、hcp和bct。这些多层膜的磁阻比分别为116%、2%和小于0.1%,其中Fe、Co和Ni的磁阻比均小于0.1%。考虑界面效应,讨论了磁流变比差异大的原因。退火后的[bcc-fcc]多层膜的磁流变率比沉积膜提高了两倍。
项目成果
期刊论文数量(66)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
M. Matsui: "MD Simulation of Thin Film using N-Body Embedded Potential" Trans. Material Research Society of Japan. 16A. 295-298 (1994)
M. Matsui:“使用 N 体嵌入势进行薄膜的 MD 模拟”Trans。
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G. Eilers: "Occupation of Tetrahedral Interstitial Positions in the Chalcopyrite Diluted Magnetic Semiconductor (CuIN)_<1-x>Mn_<2x>Te_2" Journal of Physical Society of Japan. 65(4). 1127-1128 (1995)
G. Eilers:“黄铜矿稀磁半导体(CuIN)_<1-x>Mn_<2x>Te_2 中四面体间隙位置的占据”日本物理学会杂志。
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中村久直: "[Fe(Co)/Cu]多層膜の膜構造と磁気抵抗効果" 日本応用磁気学会誌. 20(2). 373-376 (1996)
Hisanao Nakamura:“[Fe(Co)/Cu]多层膜的膜结构和磁阻效应”日本应用磁学学会杂志20(2) 373-376 (1996)。
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G.Eilers: "Preparation of a Nd-Fe-B Bond Magnet using High Frequency Magnetic Fields."" Jpn.J.Appl.Phys.34(11). 6053-6055 (1995)
G.Eilers:“使用高频磁场制备 Nd-Fe-B 粘结磁体。”Jpn.J.Appl.Phys.34(11). 6053-6055 (1995)
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G.Eilers: "Exchange Interaction of Mn^<2+> in (CuIn)_<1-x>Mn_<2x>Te_2" J.Phys.Soc.Jpn.65(7). 2227-2230 (1996)
G.Eilers:“(CuIn)_<1-x>Mn_<2x>Te_2 中 Mn^<2> 的交换相互作用”J.Phys.Soc.Jpn.65(7)。
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MATSUI Masaaki其他文献
MATSUI Masaaki的其他文献
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{{ truncateString('MATSUI Masaaki', 18)}}的其他基金
Super Magnetostriction on Concentration Phase Boundary in Mixed Magnetic Alloys
混合磁性合金中浓集相界的超磁致伸缩
- 批准号:
21656155 - 财政年份:2009
- 资助金额:
$ 4.74万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Study on non-strain single crystal MR junctions using half metallic ferromagnetic thin films.
使用半金属铁磁薄膜的非应变单晶MR结的研究。
- 批准号:
16360313 - 财政年份:2004
- 资助金额:
$ 4.74万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Nanostructure and low-dimensional properties of CMR materials
CMR材料的纳米结构和低维特性
- 批准号:
10650007 - 财政年份:1998
- 资助金额:
$ 4.74万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of new biocompatible magnetic materials and the application to hyperthermia of cancer
新型生物相容性磁性材料的开发及其在癌症热疗中的应用
- 批准号:
08559007 - 财政年份:1996
- 资助金额:
$ 4.74万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Development of Heat Generating Magnetic Materials for Hyperthermia and Application to Medical Treatment
热疗用磁性发热材料的研制及其在医疗中的应用
- 批准号:
02559008 - 财政年份:1990
- 资助金额:
$ 4.74万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B)
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