Magnetic states controlled by energetic ion irradiation in FeRh thin films

Journal Article · Sat May 15 00:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3359440· OSTI ID:21476224

Fujita, Nao; Kosugi, S; Matsui, T; Iwase, A ^[1]; Saitoh, Y ^[2]; Kaneta, Y ^[3]; Kume, K; Batchuluun, T ^[4]; Ishikawa, N ^[5]

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1. Department of Materials Science, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
2. Japan Atomic Energy Agency (JAEA-Takasaki), Takasaki, Gumma 370-1292 (Japan)
3. Department of Systems Innovation, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)
4. The Wakasa Wan Energy Research Center (WERC), 64-52-1 Tsuruga, Fukui 914-0192 (Japan)
5. Japan Atomic Energy Agency (JAEA-Tokai), Tokai, Ibaraki 319-1195 (Japan)

Changes in magnetic properties and lattice structure of FeRh films by 180 keV-10 MeV ion (H, He, and I) irradiation are studied. In spite of the irradiation with different ion species and wide range of energies, the changes in magnetization are dominated by solely a single parameter; the density of energy which is deposited through elastic collision between the ions and the samples. For the low deposition energy density, the magnetization increases with increasing the deposition energy density, while the lattice structure remains unchanged. When the deposition energy density becomes larger, however, the magnetization decreases after reaching the maximum value. The decrease in the magnetization accompanies the crystal structure change from B2 to A1. The present results imply that the magnetic state of FeRh films can be designedly controlled by the energetic ion irradiations.

• OSTI ID: 21476224
• Journal Information: Journal of Applied Physics, Vol. 107, Issue 9; Conference: 11. joint MMM-Intermag conference, Washington, DC (United States), 18-22 Jan 2010; Other Information: DOI: 10.1063/1.3359440; (c) 2010 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DEPOSITION
ENERGY DENSITY
HELIUM IONS
HYDROGEN IONS
IODINE IONS
ION BEAMS
IRON ALLOYS
IRRADIATION
KEV RANGE
MAGNETIC PROPERTIES
MAGNETIZATION
MEV RANGE
PHYSICAL RADIATION EFFECTS
RHODIUM ALLOYS
TAIL IONS
THIN FILMS
ALLOYS
BEAMS
CHARGED PARTICLES
ENERGY RANGE
FILMS
IONS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
RADIATION EFFECTS
TRANSITION ELEMENT ALLOYS