A detailed analysis of an exact solvable 2-D model on a super-exchange magnetic system with frustrations in an external magnetic field is given. By means of differentiating the expression of the free energy, various t...A detailed analysis of an exact solvable 2-D model on a super-exchange magnetic system with frustrations in an external magnetic field is given. By means of differentiating the expression of the free energy, various thermodynamic properties of the system have been obtained. The variations of these quantities with applied field H and temperature T are plotted. It is found that the competition among the frustrations, H and T, results in many interesting features. Especially, three kinds of magnetic structures of the system have been obtained for various magnetic fields, and the behaviour of the magnetization as a function of temperature for a fixed magnetic field is rather peculiar.展开更多
文摘A detailed analysis of an exact solvable 2-D model on a super-exchange magnetic system with frustrations in an external magnetic field is given. By means of differentiating the expression of the free energy, various thermodynamic properties of the system have been obtained. The variations of these quantities with applied field H and temperature T are plotted. It is found that the competition among the frustrations, H and T, results in many interesting features. Especially, three kinds of magnetic structures of the system have been obtained for various magnetic fields, and the behaviour of the magnetization as a function of temperature for a fixed magnetic field is rather peculiar.
