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Title: Chemical synthesis of L1 0 Fe-Pt-Ni alloy nanoparticles

Abstract

This work focuses on the study of the magnetic and structural properties of chemically synthesized FePt1-xNix nanoparticles, with Ni content x in the range 0.2-0.4. We report the effect of Ni substitution on the L1 0 structure, on both the as-synthesized and annealed nanoparticles. A decrease in nanoparticle size as well as in chemical order is observed with an increase in Ni content, for both the as-made and annealed nanoparticles. The results also show that the post annealing procedure at 700oC significantly enhanced the L1 0 ordering of the nanoparticles. Substitution of nickel leads to a decrease in coercivity from 14.9 kOe in FePt to 0.8 kOe for FePt 0.6Ni 0.4 alloy, while the magnetization at 3 T is increased from 48 emu/g to 88 emu/g.

Authors:
 [1];  [1]; ORCiD logo [2];  [1]
  1. Univ. of Delaware, Newark, DE (United States)
  2. Khalifa Univ. of Science and Technology, Abu Dhabi (United Arab Emirates)
Publication Date:
Research Org.:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1499252
Alternate Identifier(s):
OSTI ID: 1414614
Grant/Contract Number:  
FG02-90ER45413; DOE-FG02-90ER45413
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 8; Journal Issue: 5; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Deepchand, Vimal, Abel, Frank M., Tzitzios, Vasileios, and Hadjipanayis, George C. Chemical synthesis of L10 Fe-Pt-Ni alloy nanoparticles. United States: N. p., 2017. Web. doi:10.1063/1.5007756.
Deepchand, Vimal, Abel, Frank M., Tzitzios, Vasileios, & Hadjipanayis, George C. Chemical synthesis of L10 Fe-Pt-Ni alloy nanoparticles. United States. doi:10.1063/1.5007756.
Deepchand, Vimal, Abel, Frank M., Tzitzios, Vasileios, and Hadjipanayis, George C. Fri . "Chemical synthesis of L10 Fe-Pt-Ni alloy nanoparticles". United States. doi:10.1063/1.5007756. https://www.osti.gov/servlets/purl/1499252.
@article{osti_1499252,
title = {Chemical synthesis of L10 Fe-Pt-Ni alloy nanoparticles},
author = {Deepchand, Vimal and Abel, Frank M. and Tzitzios, Vasileios and Hadjipanayis, George C.},
abstractNote = {This work focuses on the study of the magnetic and structural properties of chemically synthesized FePt1-xNix nanoparticles, with Ni content x in the range 0.2-0.4. We report the effect of Ni substitution on the L10 structure, on both the as-synthesized and annealed nanoparticles. A decrease in nanoparticle size as well as in chemical order is observed with an increase in Ni content, for both the as-made and annealed nanoparticles. The results also show that the post annealing procedure at 700oC significantly enhanced the L10 ordering of the nanoparticles. Substitution of nickel leads to a decrease in coercivity from 14.9 kOe in FePt to 0.8 kOe for FePt0.6Ni0.4 alloy, while the magnetization at 3 T is increased from 48 emu/g to 88 emu/g.},
doi = {10.1063/1.5007756},
journal = {AIP Advances},
issn = {2158-3226},
number = 5,
volume = 8,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

FIG. 1. FIG. 1. : X-ray diffraction of (a) as-synthesized FePt and FePtNi alloys, and (b) after annealing at 700oC for 15 minutes.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.