H.‐G. Unruh

Saarland University — Germany

Materials Science · Physical Sciences

24h-index1.9kcitations99works0.02yr avg
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Research Topics

Solid-state spectroscopy and crystallography(71), Nonlinear Optical Materials Research(30), Acoustic Wave Resonator Technologies(22), Material Dynamics and Properties(13), Glass properties and applications(11)

Publications99 total

Ferroelectrics
Ullmann's Encyclopedia of Industrial Chemistry·2016
Investigation of the elastic behaviour of polymer films and bulk material by multipass Brillouin spectroscopy in thermal and microwave-induced phonons
Steinkopff eBooks·2008· 8 cited
A reinvestigation of the hypersonic properties and the specific heat of PMMA around the quasi-static glass transition
Steinkopff eBooks·2007· 25 cited
Ferroelectrics
Ullmann's Encyclopedia of Industrial Chemistry·2000
On the dynamic dielectric behaviour of (CH3NH3)3Sb2I9 (MAIA) single crystals
Solid State Communications·1998· 6 cited
Investigations on the soft-mode mechanism of the ferroelectric phase transition in
The European Physical Journal B·1998· 3 cited
Optic soft mode in ferroelastic betaine squarate
Ferroelectrics·1998· 1 cited
Inelastic light scattering and phonon‐confinement in nanocrystalline Y<sub>2</sub>O<sub>3</sub>
Berichte der Bunsengesellschaft für physikalische Chemie·1997· 12 cited
Betaine squarate, a new ferroelastic betaine compound
Solid State Communications·1996· 2 cited
Soft modes at the ferroelectric transition of<i>K</i><sub>2</sub><i>ZnBr</i><sub>4</sub>
Ferroelectrics·1996· 2 cited
About the optical activity of incommensurate [N(CH<sub>3</sub>)<sub>4</sub>]<sub>2</sub>ZnCl<sub>4</sub>(TMAZC)
Ferroelectrics·1996· 5 cited
Some ferroelastic and ferroelectric systems with coupled softening modes
Ferroelectrics·1996· 4 cited
Soft modes at ferroelastic phase transitions
Phase Transitions·1995· 6 cited
The ferroelastic transition of betaine borate
Zeitschrift für Physik B Condensed Matter·1995
The ferroelastic transition of betaine fumarate
The European Physical Journal B·1995· 8 cited
The ferroelastic transition of betaine borate
Zeitschrift für Physik B Condensed Matter·1995· 7 cited
Phase transition(s) in titanite CaTiSiO5: An infrared spectroscopic, dielectric response and heat capacity study
Physics and Chemistry of Minerals·1995· 86 cited
A study of the mechanism of the ferroelectric transition in monoclinic K<sub>2</sub>ZnBr<sub>4</sub>
Journal of Physics Condensed Matter·1994· 14 cited
Ferroelastic phase transitions in calcium chloride and calcium bromide
Phase Transitions·1993· 44 cited
A study of the relaxation of discommensurations in K<sub>2</sub>ZnCl<sub>4</sub>. II. Dielectric measurements at low frequency
Journal of Physics Condensed Matter·1992· 10 cited
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Frequent Co-authors

J. K. Krüger(5), H. J. Br�ckner(4), J. K. Kr�ger(3), Alexander Marx(3), L. Peëtz(3), R. Roberts(3), A. Levstik(3), J. K. Krüger(3), C. Pawlaczyk(3), E. Sailer(3), C. Bruch(3), O. Freitag(2), Hiroyuki Mashiyama(2), G. Fischer(2), H. E. Müser(2), R. Jakubas(2), O. Ayere(2), Klaus Planta(2), M. Pietralla(2), F. Hero(1)