47 citations · 113 across the 6 of their papers we have counts for
13 papers
Ferromagnetic resonance in -Co magnetic composites
Khattiya Chalapat, Jaakko V. I. Timonen, Maija Huuppola +7
We investigate the electromagnetic properties of assemblies of nanoscale -cobalt crystals with size range between 5 nm to 35 nm, embedded in a polystyrene (PS) matrix, at microw…
Magnetic nanocomposites at microwave frequencies
J. V. I. Timonen, R. H. A. Ras, O. Ikkala +5
Most conventional magnetic materials used in the electronic devices are ferrites, which are composed of micrometer-size grains. But ferrites have small saturation magnetization, th…
Percolation in three-dimensional random field Ising magnets
E. T. Seppälä, A. M. Pulkkinen, M. J. Alava
The structure of the three-dimensional random field Ising magnet is studied by ground state calculations. We investigate the percolation of the minority spin orientation in the par…
Energy landscapes, lowest gaps, and susceptibility of elastic manifolds at zero temperature
E. T. Seppälä, M. J. Alava
We study the effect of an external field on (1+1) and (2+1) dimensional elastic manifolds, at zero temperature and with random bond disorder. Due to the glassy energy landscape the…
Extremal statistics in the energetics of domain walls
E. T. Seppälä, M. J. Alava, P. M. Duxbury
We study at T=0 the minimum energy of a domain wall and its gap to the first excited state concentrating on two-dimensional random-bond Ising magnets. The average gap scales as $ΔE…
Susceptibility and Percolation in 2D Random Field Ising Magnets
E. T. Seppälä, M. J. Alava
The ground state structure of the two-dimensional random field Ising magnet is studied using exact numerical calculations. First we show that the ferromagnetism, which exists for s…