Anomalous charge transport phenomena in the molecular-based magnet V(TCNE)x.y(solvent)

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Publication Type Journal Article
School or College College of Science
Department Chemistry
Creator Miller, Joel Steven; Epstein, Arthur J.
Other Author Du, G.; Joo, J.
Title Anomalous charge transport phenomena in the molecular-based magnet V(TCNE)x.y(solvent)
Date 1993
Description We present charge transport studies on recently developed molecular-based magnets V(TCNE)x. y(solvent) (TCNE= tetracyanoethylene) which show local magnetic ordering at temperatures, T, as high as 400 K. V(TCNE), .y(solvent) prepared from the solvent CH2Cl2 has o(300 K) - 10-3 S/cm, and that prepared from the solvent CH3CN has o(300 K) - 10-5 S/cm. The o(T) of both materials follows the Mott 3D variable range hopping [log(T1/2o) o T-1/4] behavior. An anomalously strong T-dependent ac conductivity is likely caused by the short-range ferrimagnetic correlations. Cole-Cole analysis of the ac complex dielectric constant suggests there are two relaxation mechanisms, with an Arrhenius relation fitted to both. The microwave frequency response is consistent with audio frequency data and yields a localization length of - 5 A(o), comparable with the dimensions of a [TCNE]-. group.
Type Text
Publisher American Institute of Physics (AIP)
Volume 73
Issue 10
First Page 6566
Last Page 6568
Subject Frequency; Conductivity; Spin
Language eng
Bibliographic Citation Du, G., Joo, J., Epstein, A. J., & Miller, J. S. (1993). Anomalous charge transport phenomena in the molecular-based magnet V(TCNE)x.y(solvent). Journal of Applied Physics, 73(10), 6566-8.
Rights Management (c)American Institute of Physics. The following article appeared in G. Du, J. Joo, A. J. Epstein, & J. S. Miller, Journal of Applied Physics, 73(10), 1993 and may be found at http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=7634866&site=ehost-live
Format Medium application/pdf
Format Extent 392,063 bytes
Identifier ir-main,5450
ARK ark:/87278/s69s283n
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-06-13
ID 702358
Reference URL https://collections.lib.utah.edu/ark:/87278/s69s283n
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