This thesis focuses on investigating the possible x-ray illumination effects on the magnetic domain memory (MDM) in magnetic [Co/Pd]IrMn multilayers. In this material, MDM is induced via exchange couplings between the ferromagnetic Co/Pd layer and the antiferromagnetic IrMn layer. To carry out this investigation, we have used magneto-transport and x-ray resonant magnetic scattering. The use of magneto-transport in-situ at synchrotron x-ray scattering facility has allowed us to follow the gradual effect of x-ray illumination on the amount of exchange bias, initially present after field cooling the material. With our in-situ measurements we have been able to see that x-ray illumination does have an effect on the strength of exchange couplings in our material. To support this observation, we have also carried out complementary measurements at home in a cryomagnet, at various temperatures between 300K and 25K, and in a variety of configurations.
College and Department
Physical and Mathematical Sciences; Physics and Astronomy
BYU ScholarsArchive Citation
Walker, Colby Singint, "Effect of X-Ray Illumination on Magnetic Domain Memory in [Co/Pd]/IrMn Multilayers" (2022). Theses and Dissertations. 9777.
exchange bias, magnetic domain memory, magneto-transport, exchange couplings, antiferromagnet, ferromagnet