Please use this identifier to cite or link to this item:
http://cmuir.cmu.ac.th/jspui/handle/6653943832/55714
Title: | Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density |
Authors: | Sittichain Pramchu Atchara Punya Yongyut Laosiritaworn |
Authors: | Sittichain Pramchu Atchara Punya Yongyut Laosiritaworn |
Keywords: | Engineering;Materials Science;Physics and Astronomy |
Issue Date: | 12-Oct-2016 |
Abstract: | © 2016 Taylor & Francis Group, LLC. In this work, we used density functional theory to study the structures, formation energy and order–disorder structural transition temperature (To) of L10FePt with Ag additive. The results show that an Ag atom substituting for a Fe site is more energetically preferable than that of substituting for a Pt, thus Ag atom should replace Fe site. We found that Tois significantly suppressed by Ag impurity because of the increasing in configurational entropy, whereas the magnetism tends to decrease due to the absence of some Fe atom in doping processes. The decrease in Tocould open the opportunity to prepare FePt with lower temperature and small grain size for the high density magnetic recording media application. |
URI: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84982315566&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55714 |
ISSN: | 16078489 10584587 |
Appears in Collections: | CMUL: Journal Articles |
Files in This Item:
There are no files associated with this item.
Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.