Production of multilayred materials produced by repeated press-rolling and giant magnetoresistance effect

反复压延和巨磁阻效应多层材料的生产

• 批准号: 08650841
• 负责人: OTSUKI Akira
• 金额: $ 1.34万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650841/
• 关键词: multilayr; artificial lattice; nanometer-ordered structure; Fe-Ag; Fe-Cu; Cu; 人工格子; 多層構造体; Fe-Ag; Fe-Cu

Bulk Fe/Ag multilayrs with layr thickness of about 10 nm have been sucessfully fabricated by repeated press-rolling directed from a macroscopic stack of metal sheets. The press-rolled multilayrs exhibited giant magnetoresistance of 13% in the current perpendicular to the plane geometry and 4% in the plane at 5K.To date, metal multilayrs such as Fe.Cr, Co/Cu and Co/Ag have exhibited excellent giant magnetoresistance and have been fabricated by the well-controlled layr by layr deposition techniques. Instead of the layr by layr deposition, a totally different approach of sample fabrication, which utilizes the repeated pressing or rolling, has been successfully developed and applied to produce the layred nanometer-ordered structures from metal powders and sheets. By this sample preparation method, it is possible to produce metallic multilayrs with the layr thickness in nanometer order in a bulk form. In this work, taking advantage of such bulk dimension of the sample prepared, results of the exploration of the magnetoresistive properties by letting the current flowing perpendicular to the layrs was reported.

从宏观金属板材出发，通过反复压轧，成功地制备出厚度约为10 nm的大块Fe/Ag多层膜。在5K温度下，压延多层膜的巨磁电阻在垂直于平面的电流方向上为13%，在平面内为4%。到目前为止，Fe.Cr、Co/Cu和Co/Ag等金属多层膜表现出了优异的巨磁电阻性能，并已通过分层沉积技术通过良好的控制制备了多层膜。用一种完全不同的样品制备方法，即反复压制或反复轧制的方法，取代了LayR沉积的方法，成功地从金属粉末和薄板中制备出了层状纳米有序结构。通过这种样品制备方法，有可能以块状的形式制备纳米量级的层厚的金属多层膜。在本工作中，利用所制备的样品的这种体积尺寸，报道了通过垂直于层的电流流动来探索磁阻特性的结果。

项目成果

A.Otsuki: "Stored energy and electromotive-force of mechanically milled Copper" Materials Science Forum. 235-238. 949-952 (1996)

A.Otsuki：“机械研磨铜的储存能量和电动势”材料科学论坛。

石原 慶一.他: "カオス材料〈くり返し圧延による多層膜材料の作成〉" 配管材料. ・9. 29-31 (1997)

Keiichi Ishihara 等人：“混沌材料（通过重复滚动创建多层薄膜材料）”管道材料。 9. 29-31 (1997)

P.H,Shingu et al.: "Nano-Scale metal multilayes produced by repeated press-rolling" Meterials Science Forum. 235-238. 35-41 (1996)

P.H，Shingu 等人：“通过重复压延生产的纳米级金属多层”材料科学论坛。

A.Otsuki et al.: "Stored energy and electromotive-force of mechanically milled copper" Meterials Science Forum. 235-238. 949-952 (1996)

A.Otsuki 等人：“机械研磨铜的储存能量和电动势”材料科学论坛。

P.H.Shingce: "Nano-scale metal multilayers Produced by Repeated Press-Rolling" Materials Science Forum. 235-238. 35-41 (1996)

P.H.Shingce：“通过重复压延生产纳米级金属多层膜”材料科学论坛。