Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density

Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density

© 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...

Full description

Saved in:
Bibliographic Details
Main Authors: Sittichain Pramchu, Atchara Punya, Yongyut Laosiritaworn
Format: Journal
Published: 2018
Subjects:
Engineering
Materials Science
Physics and Astronomy
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84982315566&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/55714
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
id th-cmuir.6653943832-55714
record_format dspace
spelling th-cmuir.6653943832-557142018-09-05T03:13:15Z Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density Sittichain Pramchu Atchara Punya Yongyut Laosiritaworn Engineering Materials Science Physics and Astronomy © 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. 2018-09-05T03:00:12Z 2018-09-05T03:00:12Z 2016-10-12 Journal 16078489 10584587 2-s2.0-84982315566 10.1080/10584587.2016.1205427 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84982315566&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55714
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Engineering
Materials Science
Physics and Astronomy
spellingShingle Engineering
Materials Science
Physics and Astronomy
Sittichain Pramchu
Atchara Punya
Yongyut Laosiritaworn
Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density
description © 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.
format Journal
author Sittichain Pramchu
Atchara Punya
Yongyut Laosiritaworn
author_facet Sittichain Pramchu
Atchara Punya
Yongyut Laosiritaworn
author_sort Sittichain Pramchu
title Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density
title_short Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density
title_full Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density
title_fullStr Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density
title_full_unstemmed Suppressing FePt order-disorder structural phase transition temperature by Ag doping: First principles investigation for enhancing magnetic recording density
title_sort suppressing fept order-disorder structural phase transition temperature by ag doping: first principles investigation for enhancing magnetic recording density
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84982315566&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/55714
_version_ 1681424557130383360

Similar Items