Investigação da fase de carga ordenada em sistemas orgânicos quase-unidimensionais

• Autor(a) principal: Menegasso Filho, Paulo Eduardo [UNESP]
• Data de Publicação: 2012
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/119958
• topic: Físico-química; Sistemas eletronicos; Condutores organicos

In the eld of synthetical materials, often called in the literature as organic/molecular conductors or charge-transfer salts, the most prominient examples are the quasi onedimensional systems (TMTTF)2X and (TMTSF)2X, where TMTTF, TMTSF and X refers to tetrametiltetratiafuvaline, tetrametiltetraselenafuvaline and a monovalent anion (X = PF6 , AsF6 , Br, for example), respectively. These materials o er an unique possibility to explore a large number of correlated phenomena in \clean conditions, since the tunability of the various phases can be done through chemical and/or external applied pressure. The main goal of this bachelor work is the exploration and understanding of properties of the charge ordering phase of (TMTTF)2X series. For that, measurements of electrical resistivity, dielectric constant and depolarization current were carried out