Etude de la transition ferroelectrique-ferroelastique du KD2PO4 forme du front de phase en fonction du gradient thermique The thesis explores complex process of first order transition of KD2PO4 crystal from tetragonal phase to ferroelectric - ferroelastic orthorhombic phase and back at temperature 209 K. The experimental set up of nitrogeneous cryostat allowes temperature and temperature gradient variations during simultaneous three axes optical sample observations, dielectric measurements. The discontinous change of order parameters especially strain uzz along tetragonal-feroelectric axis is important for form of phase front, which tents to be perpendicular to tetragonal axis z. To the contrary, if external electric field along tetragonal ...
The pyroelectric coefficients of 0.72Pb(MgNb )O-0.28PbTiO (PMN-28PT), 0.67Pb(Mg Nb)O-0.33PbTiO (PMN-...
Crystals are beautiful, not only as pieces of jewellery, but also for their intrinsic properties, wh...
Thermal evolution of an organic ferroelectric, namely, glycinium phosphite, was probed by multi-temp...
The phase front during the 218 K transition in KD2PO4 crystals under a thermal gradient ${\bf G}_{\r...
Previous optical observations have shown that the first order structural phase transitions of some f...
The influence of the temperature program parameters of an ODSC experiment on the calculated “reversi...
The ferroelastic phase in hydrogen-bonded TlH2PO4 was investigated by means of impedance spectroscop...
The specific heat c and the heat power W exchanged by a Deuterated Potassium Dihydrogen Phosphate fe...
Calorimetric measurements on KD(2)PO(4) have been conducted, and the transition is found to be first...
Ferroelastic domains in γ-KCoPO4 were studied by polarized light microscopy and by x-ray methods. Th...
The focus of this dissertation lies in the theoretical description of electrical field- and mechanic...
Domain shape evolution and domain wall motion have been studied in KTiOPO4 (KTP) ferroelectric sing...
The layered perovskite LaTaO4 has been prepared in its polar orthorhombic polymorphic form at ambien...
The recent report of an intermediate incommensurately modulated orthorhombic phase in LaTaO4 has pro...
The effect of applied mechanical strains on the ferroelectric and dielectric properties of a model s...
The pyroelectric coefficients of 0.72Pb(MgNb )O-0.28PbTiO (PMN-28PT), 0.67Pb(Mg Nb)O-0.33PbTiO (PMN-...
Crystals are beautiful, not only as pieces of jewellery, but also for their intrinsic properties, wh...
Thermal evolution of an organic ferroelectric, namely, glycinium phosphite, was probed by multi-temp...
The phase front during the 218 K transition in KD2PO4 crystals under a thermal gradient ${\bf G}_{\r...
Previous optical observations have shown that the first order structural phase transitions of some f...
The influence of the temperature program parameters of an ODSC experiment on the calculated “reversi...
The ferroelastic phase in hydrogen-bonded TlH2PO4 was investigated by means of impedance spectroscop...
The specific heat c and the heat power W exchanged by a Deuterated Potassium Dihydrogen Phosphate fe...
Calorimetric measurements on KD(2)PO(4) have been conducted, and the transition is found to be first...
Ferroelastic domains in γ-KCoPO4 were studied by polarized light microscopy and by x-ray methods. Th...
The focus of this dissertation lies in the theoretical description of electrical field- and mechanic...
Domain shape evolution and domain wall motion have been studied in KTiOPO4 (KTP) ferroelectric sing...
The layered perovskite LaTaO4 has been prepared in its polar orthorhombic polymorphic form at ambien...
The recent report of an intermediate incommensurately modulated orthorhombic phase in LaTaO4 has pro...
The effect of applied mechanical strains on the ferroelectric and dielectric properties of a model s...
The pyroelectric coefficients of 0.72Pb(MgNb )O-0.28PbTiO (PMN-28PT), 0.67Pb(Mg Nb)O-0.33PbTiO (PMN-...
Crystals are beautiful, not only as pieces of jewellery, but also for their intrinsic properties, wh...
Thermal evolution of an organic ferroelectric, namely, glycinium phosphite, was probed by multi-temp...