Three-dimensional ordering, spin excitations, and dilution effects in the quasi-1-D ferromagnetic (DMeFc)(TCNE)

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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 Narayan, K. S.; Chi, K. M.
Title Three-dimensional ordering, spin excitations, and dilution effects in the quasi-1-D ferromagnetic (DMeFc)(TCNE)
Date 1991
Description The linear chain S = (1/2) molecular ferromagnet decamethylferrocenium tetracyanoethanide [(DMeFc) (TCNE)] has been studied by frequency-dependent ac susceptibility experiments. (X')(T) and (X") (T) exhibit maxima in the temperature range of 4.8 - 4.9 K, which corresponds to the transition temperature to the three-dimensional (3D) ferromagnetic ground state. The 3D ordering is due to the presence of a finite interchain ferromagnetic interaction, as determined earlier by dc magnetic susceptibility and specific heat experiments. The results of ac susceptibility measurements below Tc are analyzed in terms of a Debye-like model to investigate the presence of gaps in the spin excitation spectrum of the system. Considerable changes are observed in the critical temperature on introducing spinless sites into the system. The transition temperature of the dilution series (DMeFc)x(DMeCo)(1)-x(TCNE), where (DMeCo) + = (decamethylcobaltocenium +) has spin S=O, decreases with increasing (1 - x).
Type Text
Publisher American Institute of Physics (AIP)
Journal Title Journal of Applied Physics
Volume 69
Issue 8
First Page 5953
Last Page 5956
DOI 10.1063/1.347827
citatation_issn 218979
Subject Temperature; Transition; Magnetic
Language eng
Bibliographic Citation Narayan, K. S., Chi, K. M., Epstein, A. J. & Miller, J. S. (1991). Three-dimensional ordering, spin excitations, and dilution effects in the quasi-1-D ferromagnetic (DMeFc)(TCNE). Journal of Applied Physics, 69(8), 5953-5956.
Rights Management (c)American Institute of Physics. The following article appeared in J. Appl. Phys. 69, 5953 (1991); DOI:10.1063/1.347827
Format Medium application/pdf
Format Extent 309,186
Identifier ir-main,5351
ARK ark:/87278/s6r78zmf
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-06-13
ID 704778
Reference URL https://collections.lib.utah.edu/ark:/87278/s6r78zmf
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