Fabrication of oriented L1₀-FePt and FePd nanoparticles with large coercivity

Sato, Kazuhisa; Bian, Bo; Hirotsu, Yoshihiko

Journal of Applied Physics, 2002, 91(10), 8516-8518

Number of Access:307（2025-08-14 05:02 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89390

Link to primary information 

File Format Terms of use Size Views Date.Available Description information
JApplPhys_91_10_8516 pdf None 239 KB 94 2022.10.31  

Item Information

Output File Export EndNote Basic Export Mendeley

Title
Fabrication of oriented L1₀-FePt and FePd nanoparticles with large coercivity
Creator
NRID
1000070314424 1000070314424
ORCID
0000-0001-9078-2541 0000-0001-9078-2541
researchmap permalink
read0158304 read0158304
Scopus Author ID
55552977400 55552977400
CreatorName
Sato, Kazuhisa
NRID
1000080283810 1000080283810
CreatorName
Bian, Bo
NRID
1000070016525 1000070016525
CreatorName
Hirotsu, Yoshihiko
Description
Kazuhisa Sato, Bo Bian, and Yoshihiko Hirotsu, "Fabrication of oriented L10-FePt and FePd nanoparticles with large coercivity", Journal of Applied Physics 91, 8516-8518 (2002) https://doi.org/10.1063/1.1456446.
Abstract
Oriented L1 0-FePt and FePd nanoparticles with coercivities as large as 5 kOe (FePt) and 3 kOe (FePd) were fabricated by alternating deposition of Pt(or Pd) and Fe nanoparticles and their annealing at the temperatures between 773 and 873 K on single crystal NaCl and MgO. Atomic ordering reactions and degrees of order towards the L1 0-structure formation in these nanoparticles were investigated by high resolution electron microscopy and electron diffraction, and magnetic coercivities at low temperature were also measured. The long range order parameter of the FePt nanoparticles was ∼0.56 even after annealing at 873 K for 24 h. The coercivity of the FePt nanoparticles at 100 K was as high as twice the room temperature value. The low degree of order in the L1 0-structure formation and the thermal effect on magnetization have been found in the present FePt and FePd nanoparticles. These are closely concerned with the origin of the coercivity values which are very small in comparison with those expected from the single magnetic domain theory. © 2002 American Institute of Physics.
Publisher
American Institute of Physics
Source Title
Journal of Applied Physics
Volume (Issue)
91(10)
Page
8516-8518
Date of Issued
2002-05-15
Language
English
Handle URL
https://hdl.handle.net/11094/89390
PISSN
00218979
NCID
AA00693547
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1063/1.1456446
Access Rights
open access
CopyRight
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Kazuhisa Sato, Bo Bian, and Yoshihiko Hirotsu, "Fabrication of oriented L10-FePt and FePd nanoparticles with large coercivity", Journal of Applied Physics 91, 8516-8518 (2002) and may be found at https://doi.org/10.1063/1.1456446.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article