Direct Preparation of Highly Ordered L10Phase FePt Nanoparticles and Their Shape-Assisted Assembly

Jian Ping Wang; Jiao Ming Qiu; T. A. Taton; Byeong Su Kim

doi:10.1109/TMAG.2006.880150

Direct Preparation of Highly Ordered L1₀Phase FePt Nanoparticles and Their Shape-Assisted Assembly

Jian Ping Wang, Jiao Ming Qiu, T. A. Taton, Byeong Su Kim

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Chemically ordered L1₀ phase FePt nanoparticles has been considered one of the best candidates for future magnetic recording media with areal density beyond 1 Tbit/in². However, current preparation methods via phase transformation must overcome many obstacles, including particle agglomeration, twinning and difficulty of easy axis alignment. In this paper, the direct preparation of L1₀ phase FePt nanoparticles without phase transformation and particles’ aqueous phase self-assembly are reported. The mechanism for L1₀ phase formation during nucleation and growth processes are discussed. The unique octahedron shape makes these highly ordered FePt nanoparticles even better choice for advanced magnetic recording media because they tend to form tilted and patterned media simultaneously due to the shape effect.

Original language	English
Pages (from-to)	3042-3047
Number of pages	6
Journal	IEEE Transactions on Magnetics
Volume	42
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2006.880150
Publication status	Published - 2006 Oct

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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abstract = "Chemically ordered L10 phase FePt nanoparticles has been considered one of the best candidates for future magnetic recording media with areal density beyond 1 Tbit/in2. However, current preparation methods via phase transformation must overcome many obstacles, including particle agglomeration, twinning and difficulty of easy axis alignment. In this paper, the direct preparation of L10 phase FePt nanoparticles without phase transformation and particles{\textquoteright} aqueous phase self-assembly are reported. The mechanism for L10 phase formation during nucleation and growth processes are discussed. The unique octahedron shape makes these highly ordered FePt nanoparticles even better choice for advanced magnetic recording media because they tend to form tilted and patterned media simultaneously due to the shape effect.",

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Direct Preparation of Highly Ordered L1₀Phase FePt Nanoparticles and Their Shape-Assisted Assembly

Abstract

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