Magnetic properties of magnetically isolated L10-FePt nanoparticles

被引：22

作者：

Momose, S ^{[1
]}

Kodama, H ^{[1
]}

Uzumaki, T ^{[1
]}

Tanaka, A ^{[1
]}

机构：

[1] Fujitsu Labs Ltd, Adv Magnet Recording Lab, Kanagawa 2430197, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 10期

关键词：

D O I：

10.1063/1.1789238

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This letter reports the results obtained by measuring the temperature dependence of the coercivity of magnetically isolated L1(0)-FePt nanoparticles in agglomeration-free films deposited by using a dispersion stabilizer and a spin-coat technique. These measurements not only give the basic magnetic parameters of the nanoparticles but also provide information about the nanoparticle ordering process. The temperature at which isolated FePt nanoparticles start to order seems to be about 650degreesC. (C) 2004 American Institute of Physics.

引用

页码：1748 / 1750

页数：3

共 14 条

[1] Growth temperature dependence of long-range alloy order and magnetic properties of epitaxial FexPt1-x (x similar or equal to 0.5) films
Farrow, RFC
Weller, D
Marks, RF
Toney, MF
Horn, S
Harp, GR
Cebollada, A
[J]. APPLIED PHYSICS LETTERS, 1996, 69 (08) : 1166 - 1168
[2] Influence of temperature on the coercive field of non-interacting fine magnetic particles
Garcia-Otero, J
Garcia-Bastida, AJ
Rivas, J
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 189 (03) : 377 - 383
[3] Ivanov O. A., 1973, PHYS MET METALLOGR, V35, P81
[4] Magnetic and structural properties of (CoxFe100-x)50Pt50 alloy thin films
Kanazawa, H
Lauhoff, G
Suzuki, T
[J]. JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) : 6143 - 6145
[5] Disk substrate deposition techniques for monodisperse chemically synthesized FePt nanoparticle media
Kodama, H
Momose, S
Ihara, N
Uzumaki, T
Tanaka, A
[J]. APPLIED PHYSICS LETTERS, 2003, 83 (25) : 5253 - 5255
[6] L10-FePt nanoparticles in a magnetically isolated state
Momose, SM
Kodama, H
Ihara, N
Uzumaki, T
Tanaka, A
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2003, 42 (10B): : L1252 - L1254
[7] DETERMINATION OF ANISOTROPY-FIELD DISTRIBUTION IN PARTICLE ASSEMBLIES TAKING INTO ACCOUNT THERMAL FLUCTUATIONS
PFEIFFER, H
[J]. PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1990, 118 (01): : 295 - 306
[8] PKAMOTO S, 2002, PHYS REV B, V66, DOI UNSP 024413
[9] Low-temperature fabrication of L10 ordered FePt alloy by alternate monatomic layer deposition
Shima, T
Moriguchi, T
Mitani, S
Takanashi, K
[J]. APPLIED PHYSICS LETTERS, 2002, 80 (02) : 288 - 290
[10] A MECHANISM OF MAGNETIC HYSTERESIS IN HETEROGENEOUS ALLOYS
STONER, EC
WOHLFARTH, EP
[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1948, 240 (826) : 599 - 642

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