Joint Study on Metallic Artificial Superlattice

金属人工超晶格联合研究

• 批准号: 03044071
• 负责人: UCHIYAMA Susumu
• 金额: $ 7.04万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03044071/
• 关键词: Magneto-optics; Super Lattice; Magnetic Anisotropy; Multilayer; Magneto-striction; Exchange-coupling; Giant Magnetoresistance; 磁性薄膜; 核磁気共鳴; 界面磁性; 磁気抵抗効果

Pd/Co-, Pd/PdCo- and Pd/Ni-multilayers (MLs) with (111) and (100) orientations have been prepared by the RF sputtering method. It was found that the perpendicular magnetic anisotropy of these MLs strongly depends on the crystal orientation. In both Pd/Co- and Pd/PdCo-(100)MLs, perpendicular magnetic anisotropy is induced only when magnetic layers are very thin. In Pd/Ni-MLs, perpendicular magnetic anisotropy is larger in (100)MLs than in (111)MLs. The mechanism of the anisotropy is discussed from the viewpoint of magnetoelastic surface anisotropy.Magnetostriction constants lambda_<111> and lambda_<100> were estimated for (111) oriented polycrystalline PdCo and PtCo alloy films and multilayer films (MLs) from the induced anisotropy. It was found that the magnetostriction constants of Pd/Co and Pt/Co MLs are not determined by the magnetostriction constants of fcc Co, but are strongly affected by those of PdCo and PtCo alloys. This result implies the effect of electron hybridization and/or alloy formation at the interface.Magnetic and magnetooptic properties have been investigated for NdGd/Fe and NdGd/FeCo multilayers prepared by rfsputtering method. At a bilayer period of 10 to 15 A, perpendicular magnetic anisotropy showed the maximum value of about 2.5X10^6 erg/cm_3. Magnetooptic Kerr rotation of the multilayers reach 0.33ﾟ at 400 nm, reflecting the contribution of Nd.The giant magnetoresistance effect of Fe_<16>Ni_<66>Co_<18>/Cu multilayers prepared by the RF magnetron sputtering method is reported. A magnetoresistance ratio as large as 35% is obtained at 300 K, and it oscillates as a function of Cu layer thickness. The oscillation period is about 1 nm, which is similar to the case of Co/Cu multilayers. The maximum interlayer coupling strength for the first peak is about 0.05 erg/cm^2. For the second peak the coupling is as weak as 0.003 erg/cm^2 with a magnetoresistance ratio of 13%.

PD/Co-，PD/PDCO和PD/Ni-Multilayers（MLS）和（100）方向已通过RF溅射方法制备PD/Co-and PD/PDCO-（100）MLS，垂直磁性仅在npd/ni-ml时才诱导，垂直磁各向异性在（100）ML中比（111）Machanism of（100）磁弹性表面的观点。估计（111）型多晶PDCO和PTCO合金膜和多层膜（MLS），估计了Ambda_ <111>和Lambda_ <100>的观点。 PT/COMLS并非由FCC CO的宏伟蚂蚁确定，但已在界面上受到电子杂交的影响，并受到PTCO的影响。 RFSuptering方法。 <18>/CU多层通过RF Magnetron溅射法进行了振荡期。 0.05 erg/cm^2。

项目成果

X.Y.Yu, H.Watabe, S.Iwata, S.Tsunashima, S.Uchiyama: "Magnetic and Magneto-Optic Properties of (Nd, Pr)Gd/FeCo Multilayers" SPIE Proc.ISOS'92. 2053. 2-8 (1992)

X.Y.Yu、H.Watabe、S.Iwata、S.Tsunashima、S.Uchiyama：“(Nd, Pr)Gd/FeCo 多层膜的磁和磁光特性”SPIE Proc.ISOS92。

X.YU(5名): "Magnetic and magneto-optic properties of (Nd,Pr)Gd/FeCo" (Proc.Third Internat.Symp.on Optical Storage,Oct,1992). (1993)

X.YU（5人）：“(Nd,Pr)Gd/FeCo的磁和磁光特性”（Proc.Third Internat.Symp.on Optical Storage，1992年10月）。

S.Sumi, Y.Kusumoto, Y.Teragaki, K.Torazawa, S.Tsunashima, S.Uchiyama: "Magnetic Properties of Pt/Co Multilayered Films Sputtered on Zinc Oxide Underlayers" Proc.6th,Int.Conf.Ferrites. ICF-6. 920-923 (1992)

S.Sumi、Y.Kusumoto、Y.Teragaki、K.Torazawa、S.Tsunashima、S.Uchiyama：“氧化锌底层上溅射的 Pt/Co 多层薄膜的磁性”Proc.6th，Int.Conf.Ferrites。

S.Sumi: "Magnetic Properties of Pt/Co Multilayered Films Sputtered on Zinc Oxide Underlayers" Proc.6th,Int.Conf.Ferrites. ICF-6. 920-923 (1992)

S.Sumi：“氧化锌底层上溅射的 Pt/Co 多层薄膜的磁性”Proc.6th，Int.Conf.Ferrites。

S.Sumi, Y.Kusumoto, Y.teragaki, K.Torazawa, S.Tsunashima, S.Uchiyama: "Roughness and Magnetic Properties of Pt/Co Multilayered Films" Mat.Res.Soc,Mat.Res.Soc.Proc.313. 525-530 (1993)

S.Sumi、Y.Kusumoto、Y.teragaki、K.Torazawa、S.Tsunashima、S.Uchiyama：“Pt/Co 多层薄膜的粗糙度和磁性”Mat.Res.Soc、Mat.Res.Soc.Proc。