Zobrazeno 1 - 10
of 524
pro vyhledávání: '"E. Philippot"'
Publikováno v:
Journal de Physique IV (Proceedings). 126:7-12
GaPO 4 recrystallisation was studied under hydrothermal conditions at temperatures from 140 to 310°C (autogeneous pressures from 2 to 150 bar). The acidic solvents of pH 4 to 0 at ambient conditions were used as mineralizers. The retrograde solubili
Publikováno v:
Journal of Crystal Growth. 275:e887-e894
The hydrothermal methods have a wide application on crystal growth of single crystals and piezoelectric materials such as α -SiO2, α -GeO2, AlPO4 and GaPO4 may be synthesized by using this method. GaPO4 is a very promising compound for piezoelectri
Publikováno v:
Journal of Physics: Condensed Matter. 15:4487-4501
The A1-symmetry Raman spectra of berlinite in a broad temperature range, encompassing the α–β phase transition, are reported. The temperature dependence of the lattice mode parameters is presented, particularly concerning the 'soft' mode at ~220
Autor:
E. Philippot, Yu. V. Pisarevsky, D. Yu. Pushcharovsky, Vladimir S. Balitsky, O. Yu. Silverstova, D. V. Balitsky
Publikováno v:
High Pressure Research. 20:185-194
The first results for growth of germanium dioxide single crystals with the crquartz type structure (α-GeO2) from refluxed hydrothermal solutions are reported. The success of this method is due to the existence of metastable α-GeO2 in aqueous soluti
Autor:
Vladimir S. Balitsky, D. Yu. Pushcharovsky, O.Yu. Silvestrova, E. Philippot, Yu. V. Pisarevsky, D.V. Balitsky
Publikováno v:
Annales de Chimie Science des Matériaux. 26:183-192
The optimal growing conditions for α-GeO2 single crystals and Si-substituted α-GeO2 crystals have been found. The quality and sizes of the grown crystals of α-GeO2 have allowed studying their morphology, internal constitution and measuring their p
Publikováno v:
Journal of Physics and Chemistry of Solids. 61:1745-1750
The dynamic behavior of the ternary TeO2–BaO–TiO2 glasses were investigated by Brillouin and low-frequency Raman spectroscopies. The evolution of both the elastic constant, C11, and the Boson peak maximum position, ωmax, are sensitive to a struc
Publikováno v:
European Journal of Solid State and Inorganic Chemistry. 35:607-618
We investigated the feasability of elaboration by the pyrosol process, on various substrates, of PZT (52/48) ferroelectric phases in thin film configuration. Changes in the deposition process, such as the introduction of multilayer techniques, as wel
Publikováno v:
Thin Solid Films. 322:85-92
Amorphous dielectric gallium phosphate thin films of various chemical compositions were deposited on silicon substrates by the `pyrosol' process. This paper reports the results of a structural study of these deposits before and after thermal annealin
Publikováno v:
The European Physical Journal B. 3:7-15
Transverse and pseudo-transverse elastic waves have been studied in several scattering geometries in order to investigate the temperature dependences of C E 66 and C E 14 over the range 300-1100 K, including the transitions near 860 K. These results
Publikováno v:
Integrated Ferroelectrics. 19:1-10
Highly oriented LiTaO3 thin films were grown on (001) sapphire substrates by pyrosol process. X-ray diffraction analysis shows that the LiTaO3 crystallite c-axis is normal to the sapphire substrate. X-ray pole figures reveal that the films are also i