2018
DOI: 10.1103/physrevb.97.235156
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Relaxation dynamics in the one-dimensional organic charge-transfer salt δ(EDTTTFCONMe2)2Br

Abstract: A detailed investigation of the charge-ordered charge-transfer salt -(EDT-TTF-CONMe2)2Br by thermalexpansion measurements and dielectric spectroscopy reveals three dynamic processes of relaxational character. The slowest one exhibits the characteristics of glassy freezing and is ascribed to the conformational dynamics of terminal ethylene groups of the organic molecules. Such a process was previously found for related charge-transfer salts where, however, the anions form polymerlike chains, in contrast to the… Show more

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Cited by 5 publications
(2 citation statements)
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“…However, Ba 3 BiRu 2 O 9 at first glance does not appear to belong to any of these classes. More recently, a rather different type of relaxor ferroelectrics were reported, where charge transfer or charge disproportion plays a key role [15,18,31,32]. In these charge transfer relaxor ferroelectrics, an interlayer charge-transfer mechanism is thought to be responsible for their relaxor-like behavior.…”
Section: Resultsmentioning
confidence: 99%
“…However, Ba 3 BiRu 2 O 9 at first glance does not appear to belong to any of these classes. More recently, a rather different type of relaxor ferroelectrics were reported, where charge transfer or charge disproportion plays a key role [15,18,31,32]. In these charge transfer relaxor ferroelectrics, an interlayer charge-transfer mechanism is thought to be responsible for their relaxor-like behavior.…”
Section: Resultsmentioning
confidence: 99%
“…q 2 K/min begrenzt. Für die Analyse in einem größeren Kühlratenbereich wird die Probe daher häufig mit unterschiedlichen Raten abgekühlt und mit einer konstanten niedrigen Rate q wu aufgewärmt (Messmethode 2) [179,180].…”
Section: B Bestimmung Der Kühlratenabhängigen Glasübergangstemperaturunclassified