Published May 15, 2003 | Version v1
Journal article Metadata-only

Magnetic properties of FePt and FePt-Al2O3 granular films by post annealing

Creators

  • 1. Shinshu University, 4-17-1 Wakasato, Nagano 380-8553 (Japan)

Description

FePt and FePt-Al2O3 alloy thin films were prepared by rf magnetron sputtering system, then post annealed in vacuum. The as-deposited films were in disordered state and the ordered L10 structure was obtained by post annealing. The temperature for L10 structure of FePt and FePt-Al2O3 films was about 400 and 550 deg. C, respectively. The effect of film thickness on magnetic properties was studied. The coercivity decreased rapidly from 8 to 1.5 kOe at the thickness below 10 nm for the FePt L10 films. The decrease of coercivity is due the diffusion and compositional deviation. The surface roughness is as low as 0.3 nm for FePt-Al2O3 films with coercivity of about 3.3 kOe

Additional details

Identifiers

DOI
10.1063/1.1543858;

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
93
Journal Issue
10
Journal Page Range
p. 7169-7171
ISSN
0021-8979
CODEN
JAPIAU

Conference

Title
47. annual conference on magnetism and magnetic materials
Dates
11-15 Nov 2002
Place
Tampa, FL (United States)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35004916
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ALUMINIUM ALLOYS; ANNEALING; COERCIVE FORCE; IRON ALLOYS; MAGNETIC PROPERTIES; MAGNETRONS; ORDER-DISORDER TRANSFORMATIONS; PLATINUM ALLOYS; SPUTTERING; THIN FILMS
Descriptors DEC
ALLOYS; ELECTRON TUBES; ELECTRONIC EQUIPMENT; EQUIPMENT; FILMS; HEAT TREATMENTS; MICROWAVE EQUIPMENT; MICROWAVE TUBES; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; PLATINUM METAL ALLOYS; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
(c) 2003 American Institute of Physics.