Magnetic Properties of Ferromagnetic Metal Alloy Fine Particles Prepared by Evaporation in Inert Gases
- 1 May 1969
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 8 (5)
- https://doi.org/10.1143/jjap.8.599
Abstract
Single domain fine particles about 150 Å in diameter, of alloys of Fe, Co and Ni were prepared by evaporation in an atmosphere of argon at 3 Torr. The particles were coupled with each other like a necklace. The X-ray diffraction analysis revealed that the lattice parameters of the alloy particles agreed with those of the original bulk alloys within an experimental error of 0.3%. It was indicated, however, that they might be smaller than the latter within that error. The maximum coercive force observed in Fe–Co alloys was about 1.5 kOe. It was found that the oxidation of Fe–Co alloys can be prevented by adding some Ni. The magnetic orientation of particles caused by application of a magnetic field during the evaporation was studied. In a magnetic field of 0.5 kOe the necklace structure was aligned parallel to the field and a magnetic anisotropy of 3.5×105 erg/g appeared in this oriented sample. This strong anisotropy is considered to be due to a shape anisotropy induced by alignment.Keywords
This publication has 10 references indexed in Scilit:
- Preparation of Fine Metal Particles by Means of Evaporation in Xenon GasJapanese Journal of Applied Physics, 1968
- Fine Alloy Particles Prepared by Evaporation in Argon at Low PressuresJournal of the Physics Society Japan, 1967
- Magnetic Properties of Fe-Co Alloy Fine ParticlesJapanese Journal of Applied Physics, 1967
- Preparation of Fine Metal Particles by Means of Evaporation in Helium GasJapanese Journal of Applied Physics, 1967
- Magnetic Properties of Ferromagnetic Metal Fine Particles Prepared by Evaporation in Argon GasJapanese Journal of Applied Physics, 1965
- An Electron Microscope Study on Fine Metal Particles Prepared by Evaporation in Argon Gas at Low PressureJapanese Journal of Applied Physics, 1963
- Effect of Cobalt Content on the Properties of Elongated Iron ParticlesJournal of Applied Physics, 1963
- Exchange Anisotropy in Oxidized Iron-Cobalt ParticlesJournal of Applied Physics, 1961
- Criterion for Uniform MicromagnetizationPhysical Review B, 1957
- A Method for the Evaporation of AlloysJournal of Applied Physics, 1948