2 documents found, page 1 of 1
Crystal structure of fluorite-related Ln3SbO7 (Ln=La–Dy) ceramics studied by sy...
Siqueira, Kisla Prislen Félix; Borges, Raquel Moreira; Granado, Eduardo; Moreira, Leandro Malard; Paula, Ana Maria de; Moreira, Roberto LuizLn3SbO7 (Ln=La, Pr, Nd, Sm, Eu, Gd, Tb and Dy) ceramics were synthesized by solid-state reaction in optimized conditions of temperature and time to yield single-phase ceramics. The crystal structures of the obtained ceramics were investigated by synchrotron X-ray diffraction, second harmonic generation (SHG) and Raman scattering. All samples exhibited fluorite-type orthorhombic structures with different oxygen ...
Structural and thermal evolution studies of LaSbO4 ceramics prepared by solid-s...
Siqueira, Kisla Prislen Félix; Borges, Raquel Moreira; Soares, Júlia Cristina; Dias, AndersonThis work investigates the thermal evolution of LaSbO4 ceramics produced by solid-state method in the temperature range 700e1500 _C, for 6 h. Besides the expected phase transitions, a thermal decomposition at high temperatures to La3SbO7 was observed and discussed. The results showed that the phase LaSbO4 can be obtained only below 1450 _C, while temperatures lower than 1100 _C are not able to produce crystalli...