权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Fabrication and Magnetic Properties of Nano-particles by Ion Beam Induced Chemical Vapor Deposition (IBICVD)

离子束诱导化学气相沉积 (IBICVD) 纳米颗粒的制备和磁性

基本信息

批准号：
14205049
负责人：
SUZUKI Takao
金额：
$ 31.62万
依托单位：
Toyota Technological Institute
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14205049/
关键词：
nano magnetic particle Ion Beam Ion Beam Induced CVD Fe-Pt particle cluster patterned recording media perpendicular magnetic recording media perpendicular magnetic anisotropy ナノ粒子ナノ・ドット強磁性ナノ・ドットコバルト微粒子 FePt高磁気異方性粒子

项目摘要

The present research aims to develop a technique to fabricate nano-particles by Ion Beam Induced Chemical Vapor Deposition (IBICVD) technique, and characterize magnetic properties in conjunction with fabrication condition and in turn structure.Many efforts were taken for establishing fabrication condition of Dual Beam deposition methods so as to reproducibly fabricate submicron particles of various alloy compositions of FePt and CoPt with high magnetic anisotropy. As a result,1. Particles of submicron size for Fe-Pt and Co-Pt binary alloys were for the first time successfully fabricated.2. The particles of FePt thus obtained are found to exhibit high magnetic anisotropy of the order of 10^6erg/cc. However, this value is still lower than that for the ordered L1o phase of FePt. The reason or this lower magnetic anisotropy is found to be due the presence of two phases of fcc and fct.3. The particles of CoPt in submicron size are found to possess high magnetic anisotropy even though they are of amorphous structure.4. After annealed at high temperatures, they become of two phases of fcc and fct, but no enhancement of magnetic anisotropy is obtained.These works were presented at major international conferences including Intermag and MMM, and also were published in major scientific journals.

本研究旨在开发一种通过离子束诱导化学气相沉积（IBICVD）技术制造纳米颗粒的技术，并结合制造条件和结构来表征磁性能。在建立双束沉积方法的制造条件方面付出了很多努力，以便可重复地制造具有高磁各向异性的各种合金成分的 FePt 和 CoPt 亚微米颗粒。结果，1。首次成功制备出亚微米级Fe-Pt和Co-Pt二元合金颗粒。 2．发现由此获得的FePt颗粒表现出10^6erg/cc量级的高磁各向异性。然而，该值仍然低于 FePt 有序 L1o 相的值。发现这种较低磁各向异性的原因是由于 fcc 和 fct.3 两相的存在。研究发现，亚微米级CoPt颗粒虽然具有非晶结构，却具有较高的磁各向异性。 4．经过高温退火后，它们变成了fcc和fct两相，但磁各向异性没有得到增强。这些工作在Intermag和MMM等主要国际会议上发表，并在主要科学期刊上发表。