Speaker
Mr
Asif Asadov
(FLNP)
Description
The crystal structure of lanthanum titanate La2Ti2O7 was investigated by X-ray diffraction and Raman spectroscopy at high pressures up to 32 GPa and for structural determination neutron diffraction done at ambient condition. The La2Ti2O7 structure is monoclinic with the space group P21 at ambient condition. We observed a structural phase transition into the orthorhombic phase with a space group Pna21 at P=17.3 GPa. It was found that the phase transition highly depend on titanium oxide source. Dependences of parameters and volume of the unit cell on the pressure was found, and the bulk modulus has been calculated.
Primary author
Mr
Asif Asadov
(FLNP)
Co-authors
Dr
Rafiqa Mehdiyeva
(Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ-1143, Azerbaijan)
Prof.
Ali Mammadov
(Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ-1143, Azerbaijan)
Dr
Denis Kozlenko
(Joint Institute for Nuclear Research, Dubna 141980, Russia;)
Mr
Evgeny Lukin
(Joint Institute for Nuclear Research, Dubna 141980, Russia;)
Mr
Sergey Kichanov
(Joint Institute for Nuclear Research, Dubna 141980, Russia;)
Mrs
Olga Lis
(Joint Institute for Nuclear Research, Dubna 141980, Russia;)
Mr
Anton Rutkauskas
(Joint Institute for Nuclear Research, Dubna 141980, Russia;)
