185 citations · 2.3k across the 45 of their papers we have counts for
11 papers · 1 filter
Investigation of nonlinear effects in glassy matter using dielectric methods
P. Lunkenheimer, M. Michl, Th. Bauer +1
We summarize current developments in the investigation of glassy matter using nonlinear dielectric spectroscopy. This work also provides a brief introduction into the phenomenology…
Cooperativity and Heterogeneity in Plastic Crystals Studied by Nonlinear Dielectric Spectroscopy
M. Michl, Th. Bauer, P. Lunkenheimer +1
The glassy dynamics of plastic-crystalline cyclo-octanol and ortho-carborane, where only the molecular reorientational degrees of freedom freeze without long-range order, is invest…
Supercooled-liquid and plastic-crystalline state in succinonitrile-glutaronitrile mixtures
M. Götz, Th. Bauer, P. Lunkenheimer +1
We report a thorough characterization of the glassy phases of mixtures of succinonitrile and glutaronitrile via dielectric spectroscopy and differential scanning calorimetry. This…
Relaxation dynamics and ionic conductivity in a fragile plastic crystal
Th. Bauer, M. Köhler, P. Lunkenheimer +2
We report a thorough characterization of the dielectric relaxation behavior and the ionic conductivity in the plastic-crystalline mixture of 60% succinonitrile and 40% glutaronitri…
Glassy Dynamics Under Superhigh Pressure
A. A. Pronin, M. V. Kondrin, A. G. Lyapin +4
Nearly all glass-forming liquids feature, along with the structural alpha-relaxation process, a faster secondary process (beta-relaxation), whose nature belongs to the great myster…
Broadband dielectric spectroscopy and aging of glass formers
R. Wehn, P. Lunkenheimer, A. Loidl
We present the results of aging experiments on a variety of glass formers, including xylitol, glycerol, propylene carbonate, and [Ca(NO3)2]0.4[KNO3]0.6 (CKN). In addition, broadban…
- and - Relaxation Dynamics of a fragile plastic crystal
L. C. Pardo, P. Lunkenheimer, A. Loidl
We present a thorough dielectric investigation of the relaxation dynamics of plastic crystalline Freon112, which exhibits freezing of the orientational degrees of freedom into a gl…
The excess wing in the dielectric loss of glass-forming ethanol: A relaxation process
R. Brand, P. Lunkenheimer, U. Schneider +1
A detailed dielectric investigation of liquid, supercooled liquid, and glassy ethanol reveals a third relaxation process, in addition to the two processes already known. The relaxa…
Wide range dielectric spectroscopy on glass-forming materials: an experimental overview
U. Schneider, P. Lunkenheimer, A. Pimenov +2
Dielectric spectroscopy is one of the most commonly used techniques for the investigation of the dynamic response of glass-forming materials. The tremendous slow-down of the partic…
Broadband dielectric response of glycerol and propylene carbonate: a comparison
P. Lunkenheimer, U. Schneider, R. Brand +1
Dielectric data on glycerol and propylene carbonate covering 18 decades of frequency are presented and compared to each other. Both materials exhibit qualitatively similar behavior…
Broadband Dielectric Spectroscopy on Glass-Forming Propylene Carbonate
U. Schneider, P. Lunkenheimer, R. Brand +1
Dielectric spectroscopy covering more than 18 decades of frequency has been performed on propylene carbonate in its liquid and supercooled-liquid state. Using quasi-optic submillim…