A MODEL OF INTERACTION EFFECTS IN GRANULAR MAGNETIC SOLIDS
作者： M. El-Hilo , R. W. Chantrell , K. O’Grady
DOI: 10.1063/1.368761
关键词: Giant magnetoresistance 、 Magnetoresistance 、 Remanence 、 Condensed matter physics 、 Magnetization 、 Magnetic nanoparticles 、 Magnetic hysteresis 、 Hysteresis 、 Chemistry 、 Coercivity
摘要: The effects of interactions (dipolar and exchange) on the magnetic behavior granular solid systems are examined using a Monte Carlo model capable predicting temperature time dependence properties. Using this interaction magnetization magnetoresistance studied. results show that these properties depend critically strength nature interactions. Magnetostatic found to decrease both remanence coercivity Hc is predicted linearly with concentration. It shown spatial disorder may be responsible for an increase exchange coupling which has been observed in some experimental studies. In no hysteresis, magnetostatic superparamagnetic transition temperature, agreement data previous analytical treatments. Calculations giant (GMR) interact...
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