The changes of the magnetic properties in ion irradiated Fe-Cr alloys

Fe-Cr alloys are one of the important structural materials for fusion reactor applications, and often used as a model alloys for studying the basic mechanisms governing their behavior under an irradiation. In this study, Fe ions are irradiated on to Fe-Cr alloys with 9% of Cr contents. The magnetic Barkhausen Noise (BN) and Ferro Magnetic Resonance (FMR) experiments are conducted to investigate the changes of their magnetic properties under an ion irradiation. The BN and FMR resonance fields are increased with an increasing ion dosage. The directional ordering by irradiation induced defects seems to be responsible for the changes in the magnetic properties. (copyright 2008 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)