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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Magnetic Storage Device Using Induced Magnetic Reversal Of A Cobalt, Scott Whittenburg
Magnetic Storage Device Using Induced Magnetic Reversal Of A Cobalt, Scott Whittenburg
Chemistry Faculty Publications
The effects of the applied field, cell size, and cutting area on the ‘‘seed’’ induced magnetic reversal of a cobalt element array have been studied by a stochastic dynamic micromagnetics code using the Laudau–Lifshitz–Gilbert equation. Three magnetic reversal mechanisms under different magnitudes of the applied field have been investigated by examining the energy profiles. To minimize the effect of the thermal fluctuations on the switching time, an applied field with magnitude around 0.7 or 0.8 T and an element array with cutting area less than 10 nm310 nm are required. By using the smaller cellsize, the switching time and the …
Thickness Dependence Of Magnetic Blocking In Granular Thin Films, Scott Whittenburg
Thickness Dependence Of Magnetic Blocking In Granular Thin Films, Scott Whittenburg
Chemistry Faculty Publications
Interparticle interaction among single domain nanosize magnetic particles embedded in nonmagnetic matrix was studied. Attention was paid to concentrated Cu–Co granular thin films with a fixed magnetic volume fraction 20%. By analyzing theoretical models and comparing with experimental results, a dimensional constraint on the magnetic properties was found. As the film thickness reduces toward the thin limit the interparticle interaction plays important roles in modifying the magnetic behavior. The dipolar interaction energy was calculated among magnetic particles including far-neighbor interaction for films with different thickness values. When magnetization variation is included in the calculation, the resulting calculated interaction energy versus …
Dielectric Constant And Proton Order And Disorder In Ice Ih: Monte Carlo Computer Simulations, Steven W. Rick
Dielectric Constant And Proton Order And Disorder In Ice Ih: Monte Carlo Computer Simulations, Steven W. Rick
Chemistry Faculty Publications
The dielectric properties of ice Ih are studied using a Monte Carlo algorithm for sampling over proton configurations. The algorithm makes possible the calculation of the dielectric constant and other properties of the proton-disordered crystal. Results are presented for three classical models of water, two commonly used nonpolarizable models (SPC/E and TIP4P) and a polarizable model
(TIP4P-FQ).