通过胶体模板合成的有序大孔FePt薄膜具有高矫顽力。

High coercivity of ordered macroporous FePt films synthesized via colloidal templates.

作者信息

Iskandar Ferry, Iwaki Toru, Toda Toshiyuki, Okuyama Kikuo

机构信息

Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan.

出版信息

Nano Lett. 2005 Jul;5(7):1525-8. doi: 10.1021/nl050863w.

DOI:10.1021/nl050863w

PMID:16178269

Abstract

The preparation of a three-dimensionally (3D) ordered macroporous iron-platinum (FePt) film derived from monodisperse FePt nanoparticles (approximately 3 nm in diameter) and polystyrene latex particles (254 nm in diameter) is described. The prepared film has a hexagonally ordered porous structure and coercivity up to 10 kOe after annealing at a temperature of 600 degrees C. We also found that size of FePt particles was maintained at around 3 nm, even after annealing at a temperature of 600 degrees C.

摘要

描述了一种由单分散的FePt纳米颗粒（直径约3纳米）和聚苯乙烯胶乳颗粒（直径254纳米）制备的三维（3D）有序大孔铁铂（FePt）薄膜。制备的薄膜具有六方有序的多孔结构，在600摄氏度退火后矫顽力高达10 kOe。我们还发现，即使在600摄氏度退火后，FePt颗粒的尺寸仍保持在约3纳米左右。