Published May 15, 2005 | Version v1
Journal article Metadata-only

Improvement of magnetic properties of FePt nanoparticles by adding Mn

Creators

  • 1. Department of Materials Science and Engineering, National Tsing Hua University, 300, Hsinchu, Taiwan (China)

Description

FePtMn nanoparticles were synthesized by the simultaneous reduction of iron acetylacetonate, platinum acetylacetonate, and manganese acetylacetonate with 1,2-hexadecanediol as the reducing reagent in the polyol process. The coercivity of annealed nanoparticles strongly depends on the amount of Mn addition. A maximum coercivity of 19 kOe at room temperature was obtained for (Fe32Pt68)87Mn13 nanoparticles annealed at 700 deg. C for 1 h. The presence of Mn in the FePt L10 lattice may induce local strain so the ordering is accelerated. In addition, the high coercivity can presumably be partially related to the local bonding of Pt-Mn (or Fe-Mn) in the L10 structure

Additional details

Identifiers

DOI
10.1063/1.1853278;

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
97
Journal Issue
10
Journal Page Range
p. 10J314-10J314.3
ISSN
0021-8979
CODEN
JAPIAU

Conference

Title
49. annual conference on magnetism and magnetic materials
Dates
7-11 Nov 2004
Place
Jacksonville, FL (United States)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37026023
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACETYLACETONE; ANNEALING; COERCIVE FORCE; FERROMAGNETIC MATERIALS; IRON ALLOYS; MAGNETIC PROPERTIES; MANGANESE; MANGANESE ALLOYS; NANOSTRUCTURES; PARTICLES; PLATINUM; PLATINUM ALLOYS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K
Descriptors DEC
ALLOYS; CHELATING AGENTS; ELEMENTS; HEAT TREATMENTS; KETONES; MAGNETIC MATERIALS; MATERIALS; METALS; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; PLATINUM METAL ALLOYS; PLATINUM METALS; REAGENTS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS

Optional Information

Notes
(c) 2005 American Institute of Physics