Quantitative control of magnetic ordering in FeRh thin films using 30 keV Ga ion irradiation from a focused ion beam system

We investigated a low-energy ion-beam irradiation process for the magnetic modification of FeRh thin films using a focused ion beam system. Low-energy ion-beam irradiation induced ferromagnetic states in the FeRh thin films at low temperatures, that originally exhibited antiferromagnetism, as effect...

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Bibliographic Details
Published in:Journal of applied physics 2011-04, Vol.109 (7), p.07E311-07E311-3
Main Authors: Aikoh, K., Kosugi, S., Matsui, T., Iwase, A.
Format: Article
Language:English
Subjects:
ALLOYS
ANGULAR MOMENTUM
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
BEAMS
CHARGED PARTICLES
COLLISIONS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
ENERGY RANGE
FERROMAGNETIC MATERIALS
GALLIUM IONS
ION BEAMS
IONS
IRON ALLOYS
IRRADIATION
KEV RANGE
KEV RANGE 10-100
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETISM
MAGNETIZATION
MATERIALS
MATERIALS SCIENCE
MODIFICATIONS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
RHODIUM ALLOYS
SPIN
THIN FILMS
TRANSITION ELEMENT ALLOYS
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Summary:We investigated a low-energy ion-beam irradiation process for the magnetic modification of FeRh thin films using a focused ion beam system. Low-energy ion-beam irradiation induced ferromagnetic states in the FeRh thin films at low temperatures, that originally exhibited antiferromagnetism, as effectively as high-energy ion-beam irradiation. Because the energy deposited by the elastic collisions caused by the irradiation determined the magnetic properties of the samples, the magnetic state of the FeRh thin films could be quantitatively controlled. The low-energy ion-beam irradiation using a focused ion beam system is a potential technique to modify the magnetic properties of materials on the nano- and micro-scales, which may lead to a variety of novel spin devices and applications.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3549440