Magnetic properties of a quasi-one-dimensional organic ferromagnet |
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| Affiliation: | 1. Department of Radiology, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea;2. Public Health Wales Microbiology Cardiff, UHW, Cardiff CF14 4XW, UK;3. Univ Rennes, CHU Rennes, Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) – UMR_S 1085, F-35000 Rennes, France;4. Maladies Infectieuses et Réanimation Médicale, CHU Rennes, F-35033 Rennes, France;5. Department of Internal Medicine, Medical Faculty and University Hospital Cologne, University of Cologne, Cologne, Germany;6. Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany;7. Microvida Laboratory for Microbiology, Amphia Hospital, Breda, the Netherlands;8. Universidad de Buenos Aires, CONICET, Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM), Buenos Aires, Argentina;9. Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran;10. Department of Radiology, Seoul St. Mary''s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea;11. Department of Radiology, Seoul Medical Center, Seoul, Republic of Korea;12. Maimonides Medical Center, Brooklyn, NY, USA;13. Department of Radiology, Seoul National University Hospital, Seoul National College of Medicine, Seoul, Republic of Korea |
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| Abstract: | A quasi-one-dimensional alternating-spin Heisenberg model is used to describe the charge-transfer organic ferromagnet, which is studied by the Green's function method. The magnetic properties of the charge-transfer organic ferromagnet in different temperature regions are obtained. A formula for the critical temperature Tc is obtained and is found to be related to the spin of donors, to the intrachain exchange interaction, and to the spatial anisotropy parameter. This conclusion can explain Tc of the organic ferromagnet. The spatial anisotropy parameter of the organic ferromagnet [FeCp21][TCNE] we obtained is consistent with the estimated value of Narayan et al. The Curie-Weiss temperature Θ for the organic ferromagnet [CrCp21][TCNE] we obtained is Θ = 15.6 K which is near the experimental result of θ = 22±1 K. |
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