Hysteresis Properties of Two-Dimensional Spin Systems

Author(s) A.Yu. Polyakov , T.V. Lyutyy , A.V. Rot-Serov

Sumy State University, 2, Rimsky-Korsakov Str., 40007, Sumy, Ukraine

Е-mail alexander.p87@mail.ru
Issue Volume 1, Year 2009, Number 1
Dates Recevied 27.06.2009, in final form – 11.07.2009
Citation A.Yu. Polyakov, T.V. Lyutyy, A.V. Rot-Serov, J. Nano- Electron. Phys. 1 No1, 16 (2009)
PACS Number(s) 05.10.Ln; 75.50.Tt; 75.75. + a; 75.60. – d
Key words Two-dimensional spin systems, Core-shell particle, Coercitivity, Exchange bias field, Magnetic hysteresis.
We present the numerical results of the temperature, the core radius, and the exchange interaction constant influence on the coercitivity and the exchange bias field of the core-shell spin system. We clarified, that the coercitivity disappeared and the exchange bias reduced with the temperature. It is shown, that the coercitivity grows with the core radius. At the same time, the exchange bias field shows the non-uniform dependence, because it is a function of outer layer type. When the constant of the exchange interaction grows, the absolute value of the exchange bias field increases as well, but the coercitivity decreases.