Change in magnetic and structural properties of FeRh thin films by gold cluster ion beam irradiation with the energy of 1.67 MeV/atom

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4864745· OSTI ID:22273827

Koide, T.; Iwase, A. ^[1]; Saitoh, Y. ^[2]; Sakamaki, M.; Amemiya, K. ^[3]

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1. Department of Materials Science, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
2. Japan Atomic Energy Agency, Takasaki, Gunma 370-1292 (Japan)
3. High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801 (Japan)

The effect of energetic cluster ion beam irradiation on magnetic and structural properties of FeRh thin films have been investigated. The cluster ions used in the present studies consist of a few gold atoms with the energy of 1.67 MeV/gold atom. Saturation magnetization of the sample irradiated with Au3 cluster ion beam (280 emu/cc) is larger than that for the irradiated sample with Au1 ion beam (240 emu/cc) for the same irradiation ion fluence. These results can also be confirmed by the X-ray magnetic circular dichroism (XMCD) measurement; the XMCD signal for Au3 cluster ion irradiation is larger than that for Au1 ion irradiation. Since the ion beam irradiation induced magnetization of FeRh is significantly correlated with the amount of the lattice defects in the samples, cluster ion beam irradiation can be considered to effectively introduce the lattice defects in B2-type FeRh rather than the single ion beam. Consequently, cluster ion irradiation is better than single ion irradiation for the viewpoint of saturation magnetization, even if the same irradiation energy is deposited in the samples.

• OSTI ID: 22273827
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL DEFECTS
GOLD IONS
ION BEAMS
ION PAIRS
IRON ALLOYS
IRRADIATION
MAGNETIC CIRCULAR DICHROISM
MAGNETIZATION
PHYSICAL RADIATION EFFECTS
RHODIUM ALLOYS
THIN FILMS
X RADIATION