Size Effect and Role of Short‐ and Long‐Range Interactions on 1D Spin‐Crossover Systems within the Framework of an Ising‐Like Model
| العنوان: | Size Effect and Role of Short‐ and Long‐Range Interactions on 1D Spin‐Crossover Systems within the Framework of an Ising‐Like Model |
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| المؤلفون: | Jorge Linares, Daniel Chiruta, Mihai Dimian, Yann Garcia |
| المصدر: | European Journal of Inorganic Chemistry. 2013:951-957 |
| بيانات النشر: | Wiley, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Inorganic Chemistry, Hysteresis, symbols.namesake, Phase transition, Thermal hysteresis, Condensed matter physics, Spin crossover, Chemistry, symbols, Ising model, Hamiltonian (quantum mechanics), Critical value |
| الوصف: | This contribution, motivated by an experimental study of the influence of long-range interactions on the hysteresis loop, presents a theoretical study of spin-state transitions within the framework of an Ising-like model. The Hamiltonian includes both short- and long-range interactions and takes into account different degeneracies between molecular states. The problem is solved exactly for one-dimensional systems by using a transfer matrix method and the effects of temperature, long- and short-range interactions, and system size (number of molecules) are analysed in depth. The width of the thermal hysteresis loop of spin-crossover compounds decreases when reducing the long-range interactions, down to a critical value, calculated for the first time in this contribution, at which the hysteresis vanishes. This dependence is similar to the one generated by the decrease in short-range interactions assuming that the corresponding variation is proportional. An increase in the system size contributes to a larger influence of long-range interactions and the hysteretic loop approaches a rectangular shape and reaches a saturation width, which is predicted for the first time. These results are important for the design of novel spin-crossover materials featuring sharp spin transitions along with wide hysteresis loops, which are particularly suited for potential applications in display and data storage devices. |
| تدمد: | 1099-0682 1434-1948 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::69cde038702b7df07ebe16556433e4f9Test https://doi.org/10.1002/ejic.201201316Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........69cde038702b7df07ebe16556433e4f9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10990682 14341948 |
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