Magnetic properties of a triangle double-layer graphene nanoisland: a Monte Carlo study
| Autor: | Zhou Peng, Jia-Hui Lv, Pei-Nan Xie, Wei Wang, Hao-Jia Wu |
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| Rok vydání: | 2020 |
| Předmět: |
Double layer (biology)
Materials science Condensed matter physics Internal energy Graphene Monte Carlo method General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field law.invention Magnetization Hysteresis law 0103 physical sciences 010306 general physics 0210 nano-technology Phase diagram |
| Zdroj: | The European Physical Journal Plus. 135 |
| ISSN: | 2190-5444 |
| Popis: | By using Monte Carlo simulations, we investigated a triangle double-layer graphene nanoisland with mixed-spin (3/2, 2) configuration. We focused on the effects of crystal-fields, exchange couplings, longitudinal magnetic fields, and temperature on the magnetic properties of the system. Various curves of magnetization, susceptibility, and internal energy as a function of temperature were obtained. We plotted the phase diagrams of blocking temperature in the different parameter planes. We found that increasing |Jab/JZ|,Jbb/JZ, and h/JZ or weakening |Db/JZ| is beneficial to improving the TB/JZ, but the TB/JZ is very insensitive to changes in the Da/JZ and Jaa/JZ. In addition, it is worth noting that the system can exhibit abundant multiple-loops hysteresis behaviors for certain physical parameters, such as triple, quadruple, quintuple, septuple hysteresis loops. |
| Databáze: | OpenAIRE |
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