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Shuji Obata

Publications and source records attributed to Shuji Obata.

2 recordsLinked to original sources
arXiv2014

Computer Simulations on Barkhausen effects and Magnetizations in Fe Nano-Structure Systems

The magnetization processes in Fe nano-systems are investigated using the numerical simulations based on classical magnetic dipole moment interactions. The domain energies are calculated from moment-moment interactions over whole systems using large scale computing resources. The results directly show most of basic magnetization phenomena. The Barkhausen effects are represented with jumps and terraces of magnetization steps induced from external field changes of {\Delta}H.

cond-mat.mtrl-sci↗
arXiv2014

Numerical Analysis of Magnetic Domain Energy System in Nano-scale Fe

Magnetic materials generally construct magnetic domains in external field H. These domain structures are changed with the field changes {\Delta}H accompanying the Barkhausen effects. These phenomena are shown using Fe domain energy systems composed of classical magnetic dipole moment interactions. The magnetization curves are created with terraces and jumps, where the flux structure changes produce the Barkhausen noise. The terraces indicate the delays of the magnetization processes for the field H. These numerical simulations are performed in Fe nano-scale regular lattice systems of rods and belts, which directly show the evidences of these basic phenomena.

cond-mat.mtrl-sci↗