By Topic

Perpendicular easy axis alignment of FePt nanoparticles on a platinum-(001) buffer layer for high-density magnetic recording

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Matsui, Isao ; Toshiba Corporate Research & Development Center, Komukaitoshiba-cho 1, Saiwai-ku, Kawasaki 212-8582, Japan ; Ogi, Takashi ; Iskandar, Ferry ; Okuyama, Kikuo

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3644925 

The phenomenon of atomic motion between the nanoparticle and its substrate was examined in constructing perpendicularly aligned FePt nanoparticle structures. Samples of iron-rich FePt nanoparticles synthesized by vapor phase or liquid phase synthesis techniques were deposited on a platinum-(001) buffer layer and annealed in a hydrogen atmosphere. Superconductive quantum interference device and x ray diffraction measurements for the in-plane and out-of-plane direction exhibited perpendicularly oriented magnetization and an L10 ordered phase with a perpendicular easy axis orientation. The coercivity was measured as approximately 4.3 kOe. In addition, high angle annular dark field-scanning transmission electron microscopy showed FePt alloy formation normal to the sample surface. The atomic distribution data showed iron diffusion into the platinum layer. These results might open a new path toward ultrahigh density storage media from chemically synthesized FePt nanoparticles.

Published in:

Journal of Applied Physics  (Volume:110 ,  Issue: 8 )