arXiv subjects

R. Rodríguez-Suárez

Publications and source records attributed to R. Rodríguez-Suárez.

2 recordsLinked to original sources

arXiv2014

FORC and Micromagnetism Approach to the Domain Structure of Cobalt Antidot Arrays

We study the influence of the porosity on the domain structure of cobalt antidots thin films with controlled and circular defects of 20, 40 and 60 nm of diameter. Micromagnetic simulations, combined with First-order reversal curves analysis of classical magnetometry measurements, have been used to track the evolution of the magnetic domain configurations. The found coercivity enhancement with the increase of the pore diameter is correlated to the domain reversibility. Moreover, we found that when the pores diameter increases the domain-domain interactions become dominant.

cond-mat.mtrl-sci↗

arXiv2012

Magnetic relaxation in bilayers of yttrium iron garnet/platinum due to the dynamic coupling at the interface

We show that in ferromagnetic (FM)/normal metal (NM) bilayers the dynamic coupling at the interface transfers an additional magnetic relaxation from the heavily damped motion of the conduction electron spins in the NM layer to the FM spins. While the FM relaxation rates due to two-magnon scattering and spin pumping decrease rapidly with increasing FM film thickness, the damping due to the dynamic coupling does not depend on the FM film thickness. The proposed mechanism explains the very large broadening of ferromagnetic resonance lines in thick films of yttrium iron garnet after deposition of a Pt layer.

cond-mat.mtrl-sci↗