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的化学蒸气沉积（IBICVD）技术制造纳米粒子的技术，并与制造条件结合进行磁性特征和依次的结构。为建立双束沉积方法的制造条件，以使其与多种化合物的构成型物的储存量和储存量的储存量储备。结果，1。 Fe-Pt和Co-PT二元合金的亚微米尺寸的颗粒首次成功制造。2。因此，发现因此获得的富集颗粒表现出10^6erg/cc阶的高磁各向异性。但是，此值仍低于FEPT的有序L1O相。发现较低的磁各向异性的原因是存在两个阶段的FCC和FCT.3。在亚微米大小中，COPT的颗粒具有高磁各向异性，即使它们具有无定形结构。4。在高温下退火后，它们成为FCC和FCT的两个阶段，但没有获得磁各向异性的增强。这些作品在包括Intermag和MMM在内的主要国际会议上进行了，并且在主要的科学期刊上也发表。