Lucas Saraiva Alves Olivier
@fisica.ufc.br
Physics
RESEARCH, TEACHING, or OTHER INTERESTS
Condensed Matter Physics
Scopus Publications
- Vibrational dynamics, electronic structure, and influence of pressure on the phase stability of Sr3WO6 complex wolframate framework
Gilberto D. Saraiva, Luiz F. Lobato, Antonio J.R. de Castro, Romulo S. Silva, Lucas S.A. Olivier, João G. de Oliveira Neto, José A. Lima, Francisco F. de Sousa, Paulo T.C. Freire, Raí F. Jucá
Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, 2026 - Raman spectroscopy investigation of adipic acid under high pressure
R.S. Silva, L.S.A. Olivier, D.L.M. Vasconcelos, J.A. Lima
Journal of Molecular Structure, 2026 - Structural and vibrational properties of phthalic acid under high Pressure: A combined raman spectroscopic and DFT study
F.V.S. Oliveira, R.S. da Silva, L.S.A. Olivier, P.T.C. Freire, Carlos Emídio, J.A. Lima
Journal of Molecular Structure, 2026
Phthalic acid (PA) was investigated under high-pressure conditions ranging from 1.0 atm to 9.8 GPa, within the spectral range of 100–3200 cm⁻¹, using Raman spectroscopy combined with DFT calculations. The structural conformation and the parameters of the monoclinic unit cell were evaluated through ab initio calculations and compared with literature data reported at ambient pressure. Additionally, Hirshfeld surface analysis was employed to examine both the π-π stacking interactions between molecules and the symmetry of the hydrogen bonding network. Raman spectral analysis revealed that compression did not induce any phase transition within the investigated pressure range. The ab initio calculations suggest that intermolecular interactions, particularly hydrogen bonding and the stacking of aromatic moieties, play a crucial role in maintaining the structural stability of PA under high-pressure conditions. - Electronic Structure, Lattice Dynamics, and Pressure-Induced Phase Transitions in Gd2MoO6: A Combined Theoretical and Experimental Study
Danilo S. Luz, Luiz F. L. da Silva, Raí F. Juca, Vicente O. Sousa Neto, Antônio J. Ramiro de Castro, Francisco F. de Sousa, Waldeci Paraguassu, Rômulo S. Silva, Lucas S. A. Olivier, José A. Lima, Paulo de T. C. Freire, João G. de Oliveira Neto, Gilberto D. Saraiva
ACS Omega, 2026
High Resolution Image Download MS PowerPoint Slide This study presents a combined theoretical and experimental investigation into the structural, electronic, and vibrational properties of Gd 2 MoO 6 . To gain deeper insight into its chemical composition, first-principles calculations were employed, emphasizing energy band analysis. The conduction band minimum is positioned at the high-symmetry Γ-point, while the valence band maximum appears between the Z and Γ-points. These results indicate that Gd 2 MoO 6 is a semiconductor exhibiting an indirect band gap of approximately 1.92 eV. Furthermore, lattice dynamics were examined using density functional theory (DFT) to interpret the experimental Raman and infrared spectra. Hirshfeld surface and structural analyses reveal that Gd 2 MoO 6 exhibits a hybrid ionic-covalent framework governed by dominant Gd–O/Gd–O and Mo–O/O–Mo bonds. Additionally, pressure-dependent Raman spectroscopy was carried out to explore structural modifications resulting from pressure variations. Based on the spectral changes, two phases’ transitions were identified at approximately 3.1–3.3 GPa and 9.5–10 GPa, potentially linked to increased disorder of octahedra induced by pressure effects. The principal component analysis and hierarchical cluster analysis identified two phase transitions at near pressure range of 3.1–3.3 GPa and 9.5–10. GPa, which are in agreement with the pressure-dependent Raman studies. - Structural and surface properties of oxides derived from layered double hydroxides (LDHs): Effects on the bioproducts obtained in the glycerol valorization
João Victor S. Cardoso, Antonio J. Martins, Alcineia C. Oliveira, José A. Lima Junior, Lucas S.A. Olivier, Ramón R. Peña-García, Marco A. Morales, Celio L. Cavalcante, José Jiménez-Jiménez, Enrique Rodríguez-Castellón
Molecular Catalysis, 2025 - Phase transitions in DL-norvaline crystal under high pressure by Raman spectroscopy
L.S.A. Olivier, R.S. Silva, J.A.S. Silva, D.L.M. Vasconcelos, J.A. Lima
Journal of Molecular Structure, 2025 - Unveiling the pressure-induced scheelite to M ′ -fergusonite phase transition in NaCe(MoO4)2
W. C. Ferreira, F. G. Alabarse, C. Luz-Lima, R. S. Silva, L. S. A. Olivier, P. T. C. Freire, J. A. Lima, J. V. B. Moura
Applied Physics Letters, 2024
Sodium-cerium molybdate, NaCe(MoO4)2, belongs to the family of double alkaline rare-earth molybdate, and it holds significant importance across various technological domains, such as environmental remediation and energy conversion. Despite its importance, the behavior of NaCe(MoO4)2 under high-pressure conditions remains unexplored. This study uses synchrotron x-ray diffraction and Raman spectroscopy to investigate NaCe(MoO4)2in situ under high-pressure conditions. We observed a pressure-induced phase transition from the scheelite to the M′-fergusonite structure type on a double molybdate at approximately 10 GPa. These findings contribute to a deeper understanding of the structural stability of NaCe(MoO4)2 and shed light on the broader field of high-pressure studies of double molybdates.
