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

• 批准号: 06452311
• 负责人: MATSUI Masaaki
• 金额: $ 4.74万
• 依托单位: Nagoya Univeristy
• 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: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06452311/
• 关键词: Epitaxial artificial superlattice; Control of crystal structure; Non-equilibrium crystal structure; Molecular beam epitaxy; Magnetic moment; Magneto-volume effect; Surface reattangement; 3d transition metal; 金属人工格子; エピタキシャル成長; RHEDD強度振動; STM液中観

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.

[fcc-fe/cu]，[gamma-fe/cu（ni）]，[gamma-fe（ni/cu]，[fcc-cr/cu]，[bct-ni/fe]，[bcc-cu/fe]，[bcc-cu/fe]，[bcc-cu/fe]，[bct-ni/cr]通过MBE或IBS方法制备[HCP-CO/CR]，[FCC-AU/BCC-FE]，[BCT-CU/BCT-FE（Ni）]，[BCT-CU/BCC-FE（CO）]。 Anakyz的磁性和磁性的结果如下。 BCC-FE（001）或BCC-CR（001）是BCT结构。 BCT-NI的磁矩比散装FCC-NI的磁矩更重要。 BCC-CU和FCC-CR的磁性特性是非铁磁性的3。 BCC-CR（001）上Fe，Co和Ni的晶体结构分别在几毫升内BCC，HCP，BCT。这些多层的磁磁性比率为Fe，Co和Ni的116％，2％和低于0.1％。考虑到界面效应4。与ASEPOSOSIDED电影相比，将退火的[BCC-FCC]多层的MR比率增加了两次。

项目成果

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)

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)。

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。

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。

Y.Kamada: "Epitaxial Growth of Ni, Cu on bcc-Fe (001) and Ni on fcc-Au (001)" J.Phys.Soc.Jpn.66(3)(in press). (1997)

Y.Kamada：“bcc-Fe (001) 上的 Ni、Cu 和 fcc-Au (001) 上的 Ni 外延生长”J.Phys.Soc.Jpn.66(3)（印刷中）。