Dr
Andrzej Grzechnik
(Condensed Matter Physics, Univ. Pais Vasco)
18/05/2009, 18:30
In this contribution, we will review our single-crystal studies of various (multi)ferroic materials as a function of pressure and temperature.
Ferroic phase transitions are characterized by the reduction of crystal symmetry very often associated with the appearance of a twin domain structure and/or an incommensurate structure. In addition, the low-symmetry phase usually shows a pronounced...
Dr
Francesca Fabbiani
(Georg-August Universität Göttingen)
18/05/2009, 18:30
The application of high pressure is a powerful method for exploring the polymorphic behaviour of simple molecular compounds.[1-4] Direct compression of either single crystals or powders, and crystal growth from the melt are two methods that have been successfully used to prepare new polymorphs.[1-4] The recent development of the experimental technique for in situ high-pressure crystallisation...
Dr
Christian Lathe
(GFZ German Research Centre for Geosciences), Dr
Hans J. Mueller
(GFZ German Research Centre for Geosciences)
18/05/2009, 18:30
The Earth’s mantle has a mass of about 4.08 x 10 exp 21 tons and represents 68 % of the total mass of the Earth. The Earth’s mantle is only accessible by indirect methods, first of all seismological studies. The interpretation of these seismic data from the Earth’s deep interior requires measurements of the elastic and inelastic properties of Earth materials under experimental simulated mantle...
Dr
Mikhail EREMETS
(Max Planck Institute for Chemistry)
18/05/2009, 18:30
X-ray diffraction of weak scattering materials at megabar pressures
M. I. Eremets, I. A. Trojan, S. A. Medvedev, T. Palasyuk
We will present recent results on X-ray diffraction in combination with optical and electrical studies of light elements: sodium [1], nitrogen [2] [3], and compounds with hydrogen and nitrogen: SiH4 [4], HN3, N2H4, LiN3 and others at pressures up to about 200 GPa....
