Polaronic ferromagnetism in conducting polymers
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Data
2001-12-01
Autores
Pereira, E. C.
Correa, A. A.
Bulhões, L. O S
Aleixo, P. C.
Nóbrega, J. A.
De Oliveira, A. J A
Ortiz, W. A. [UNESP]
Walmsley, L. [UNESP]
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Resumo
Ferromagnetic behavior at room temperature is reported in metal-free-conducting polymer samples of poly(3-methylthiophene) doped with ClO 4 -. Magnetic moments associated with spin 1/2 positive polarons are possibly interacting through a Dzialoshinski-Moriya anisotropic superexchange via the dopant anions, giving rise to weak ferromagnetism. © 2001 Elsevier Science B.V. All rights reserved.
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Palavras-chave
Exchange interactions, Ferromagnetism, Polarons, Polymers, Ferromagnetic behaviors, Poly (3-methylthiophene), Room temperature, Spin 1/2, Superexchanges, Weak ferromagnetism, Conducting polymers, Doping (additives), Magnetic moments, Organic conductors
Como citar
Journal of Magnetism and Magnetic Materials, v. 226-230, n. PART II, p. 2023-2025, 2001.