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Title: Large enhancement of magnetic moment in L1(0) ordered FePt thin films by Nd substitutional doping

Abstract

We studied L1(0) ordered Fe50Pt50-xNdx alloy films, which showed a large enhancement (similar to 18.4% at room temperature and similar to 11.7% at 10 K) of magnetic moment with 6 atomic % of Nd. Analysis of the x-ray magnetic circular dichroism spectra at the Fe L-3,L-2 edges and Nd M-5,M-4 edges in Fe50Pt44Nd6 films indicated a significant contribution of the Nd orbital moment. The origin of the large enhancement of magnetic moment was attributed to the effect of ferromagnetic coupling of the total magnetic moments between Fe and Nd. Density functional theory based first principles calculations supported the experimental observations of increasing moment due to Nd substitution of Pt.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National University of Singapore; Swedish Research Council (SRC)
OSTI Identifier:
1240416
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Journal of Physics. D, Applied Physics
Additional Journal Information:
Journal Volume: 48; Journal Issue: 25; Journal ID: ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
L10 FePt; magnetic moment; substitutional doping

Citation Formats

Xu, D. B., Sun, C J, Chen, J. S., Heald, S M, Sanyal, B., Rosenberg, R. A., Zhou, T. J., and Chow, G. M. Large enhancement of magnetic moment in L1(0) ordered FePt thin films by Nd substitutional doping. United States: N. p., 2015. Web. doi:10.1088/0022-3727/48/25/255001.
Xu, D. B., Sun, C J, Chen, J. S., Heald, S M, Sanyal, B., Rosenberg, R. A., Zhou, T. J., & Chow, G. M. Large enhancement of magnetic moment in L1(0) ordered FePt thin films by Nd substitutional doping. United States. https://doi.org/10.1088/0022-3727/48/25/255001
Xu, D. B., Sun, C J, Chen, J. S., Heald, S M, Sanyal, B., Rosenberg, R. A., Zhou, T. J., and Chow, G. M. 2015. "Large enhancement of magnetic moment in L1(0) ordered FePt thin films by Nd substitutional doping". United States. https://doi.org/10.1088/0022-3727/48/25/255001.
@article{osti_1240416,
title = {Large enhancement of magnetic moment in L1(0) ordered FePt thin films by Nd substitutional doping},
author = {Xu, D. B. and Sun, C J and Chen, J. S. and Heald, S M and Sanyal, B. and Rosenberg, R. A. and Zhou, T. J. and Chow, G. M.},
abstractNote = {We studied L1(0) ordered Fe50Pt50-xNdx alloy films, which showed a large enhancement (similar to 18.4% at room temperature and similar to 11.7% at 10 K) of magnetic moment with 6 atomic % of Nd. Analysis of the x-ray magnetic circular dichroism spectra at the Fe L-3,L-2 edges and Nd M-5,M-4 edges in Fe50Pt44Nd6 films indicated a significant contribution of the Nd orbital moment. The origin of the large enhancement of magnetic moment was attributed to the effect of ferromagnetic coupling of the total magnetic moments between Fe and Nd. Density functional theory based first principles calculations supported the experimental observations of increasing moment due to Nd substitution of Pt.},
doi = {10.1088/0022-3727/48/25/255001},
url = {https://www.osti.gov/biblio/1240416}, journal = {Journal of Physics. D, Applied Physics},
issn = {0022-3727},
number = 25,
volume = 48,
place = {United States},
year = {Wed Jul 01 00:00:00 EDT 2015},
month = {Wed Jul 01 00:00:00 EDT 2015}
}