TY  - JOUR
A1  - Pietsch, Ullrich
A1  - Davaasambuu, Jav
A1  - Pucher, Andreas
A1  - Kochin, V.
T1  - Atomistic origin of the inverse piezoelectric effect in alpha-SiO2 and alpha-GaPO4
Y1  - 2003
UR  - http://www.edpsciences.org/articles/epl/pdf/2003/12/7666.pdf?access=ok
SN  - 0295-5075
ER  - 
TY  - JOUR
A1  - Pietsch, Ullrich
A1  - Leitenberger, Wolfram
A1  - Wendrock, Horst
A1  - Bischoff, Lothar
A1  - Panzner, Tobias
A1  - Grenzer, Jörg
A1  - Pucher, Andreas
T1  - Double pinhole diffraction of white synchrotron radiation
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Pietsch, Ullrich
A1  - Stahn, Jochen
A1  - Davaasambuu, Jav
A1  - Pucher, Andreas
T1  - Electric field induced charge density variations in partially-ionic compounds
Y1  - 2001
SN  - 0022-3697
ER  - 
TY  - JOUR
A1  - Stahn, Jochen
A1  - Pucher, Andreas
A1  - Geue, Thomas
A1  - Daniel, A.
A1  - Pietsch, Ullrich
T1  - Electric field induced electron density response of GaAs and ZnSe
Y1  - 1998
ER  - 
TY  - JOUR
A1  - Stahn, Jochen
A1  - Pucher, Andreas
A1  - Pietsch, Ullrich
A1  - Zellner, J.
A1  - Weckert, E.
T1  - Experimental determination of electric field induced differences in structure factor phases in the order of 2%
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Wegener, Michael
A1  - Bergweiler, Steffen
A1  - Wirges, Werner
A1  - Pucher, Andreas
A1  - Tuncer, Enis
A1  - Gerhard, Reimund
T1  - Piezoelectric two-layer stacks of cellular polypropylene ferroelectrets : transducer response at audio and ultrasound frequencies
N2  - Piezoelectric cellular polypropylene films, so-called ferroelectrets, are assembled in a stack with two active transducer layers. The stack is characterized with respect to its linear and quadratic response in a frequency range from 1 kHz to 80 kHz. A relatively smooth frequency response in the sound-pressure level is found for the individual layers as well as for both layers driven in phase. The piezoelectric response of the two-layer stack is twice the response of an individual layer over a rather broad frequency range. Furthermore, the influence of the preparation conditions on the resonance frequency and the effect of the quadratic distortion on the radiated sound are investigated both for the individual transducer films in the stack and for the stack system as a whole
Y1  - 2005
SN  - 0885-3010
ER  - 
TY  - JOUR
A1  - Künstler, Wolfgang
A1  - Xia, Zhongfu
A1  - Weinhold, Till
A1  - Pucher, Andreas
A1  - Gerhard, Reimund
T1  - Piezoelectricity of porous polytetrafluoroethylene single- and multiple-film electrets containing high charge densities of both polarities
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Gerhard, Reimund
A1  - Künstler, Wolfgang
A1  - Görne, Thomas
A1  - Pucher, Andreas
A1  - Weinhold, Till
A1  - Seiß, Martin
A1  - Xia, Zhongfu
A1  - Wedel, Armin
A1  - Danz, Rudi
T1  - Porous polytetrafluoroethylene space-charge electrets for piezoelectrical applications
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Gerhard, Reimund
A1  - Xia, Zhongfu
A1  - Künstler, Wolfgang
A1  - Pucher, Andreas
T1  - Preliminary study of multi-layer space-charge electrets with piezoelectric properties from porous and non- porous Teflon films
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Wegener, Michael
A1  - Bergweiler, Steffen
A1  - Wirges, Werner
A1  - Pucher, Andreas
A1  - Gerhard, Reimund
T1  - Voided space-charge electrets : piezoelectric transducer materials for electro-acoustic applications
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Gorfman, Semen
A1  - Tsirelson, Vladimir
A1  - Pucher, Andreas
A1  - Morgenroth, Wolfgang
A1  - Pietsch, Ullrich
T1  - X-ray diffraction by a crystal in a permanent external electric field : electric-field-induced structural response in alpha-GaPO4
N2  - For the first time, site-selective distortion has been investigated for two different structural units in the ternary compound alpha-GaPO4 under the influence of a permanent external electric field. Based on 54 measured reflection intensities, the electric-field-induced distortion of PO4 and GaO4 tetrahedra in alpha-GaPO4 crystals is evaluated using a model of pseudoatomic displacements introduced recently [Gorfman, Tsirelson & Pietsch (2005). Acta Cryst. A61, 387- 396]. A stronger variation of the P-O bond lengths in the PO4 tetrahedron was found compared to the bonds in the GaO4 tetrahedron. The different distortions of the tetrahedra owing to the electric field were analysed in terms of the valence charge density of alpha-GaPO4 and its topological characteristics. The larger charge of the P pseudoatom compared to the Ga atom was recognized as the main reason for the higher sensitivity of the PO4 tetrahedron to a permanent external electric field
Y1  - 2006
UR  - http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1600-5724
U6  - https://doi.org/10.1107/S0108767305036111
SN  - 0108-7673
ER  -