By Topic

Crystallographic and magnetic properties of nanocrystalline Fe78Al4Nb5B12Cu1 alloys

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)
Yoon, Sung Hyun ; Department of Physics, Kunsan National University, Kunsan 573-701, Korea ; Kim, Sung Baek ; Lee, Hi Min ; Chul Sung Kim

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1433932 

The effects of crystallographic change induced during the annealing process upon the magnetic properties of nanocrystalline Fe78Al4Nb5B12Cu1 alloy were investigated by using x-ray diffraction, Mössbauer spectroscopy, and macroscopic magnetometry. Special focus was concentrated on the structures of interfacial layer, which is a region between nanocrystallite and amorphous matrix. To examine the differences in the crystallographic and the magnetic properties associated with the thermal treatments, amorphous samples were annealed in two different ways, i.e., flash annealing and conventional annealing. The Mössbauer spectra were analyzed to decompose into three or four components, and revised Vincze method was used to extract the distributions of hyperfine parameters. Interfacial layers were found to have a considerable crystalline order. Flash annealing advances the crystallization process earlier than the conventional annealing. As a result, the fraction of the crystalline phase produced by flash annealing is much higher than that produced by conventional annealing performed at the same temperature. At annealing temperature of as high as 550 °C, second-stage crystallization started and crystalline Fe2B phase was created. The deterioration in soft magnetic properties at this high annealing temperature was attributed this crystallographic change. © 2002 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:91 ,  Issue: 4 )