High-pressure studies in glass silicates

• Grant number: 21/13974-0
• Support Opportunities: Regular Research Grants
• Start date: October 01, 2022
• End date: January 31, 2025
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Ariano De Giovanni Rodrigues
• Grantee: Ariano De Giovanni Rodrigues
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated researchers: Paulo Sergio Pizani

Abstract

Given that the nucleation-growth-crystallization process in silicates that gives rise to the material in the glass-ceramic state is not a straightforward process, but the system goes through intermediate phases before reaching the most stable phase, we propose the application of in situ measurements at high pressures and high temperatures to study the thermodynamic properties, not yet known, of each of the stable or metastable phases of two types of model systems of silicate glass: one nucleating heterogeneously, (lead metasilicato) and another presenting homogeneous nucleation (barium silicate). In addition to addressing these open scientific issues, which is essential for understanding the crystallization process, the search for external conditions - such as the application of high pressures and temperature - that are capable of inducing changes in the energy of each intermediate phase present in the process opens up the possibility of establishing new pathways of crystallization, by controlling the clusters microstructure through the stabilization of different crystalline phases, and hence opening pathways to new properties for the resulting glass-ceramic materials. From the acquisition of a high-pressure cell to be coupled to the Raman systems currently operational, we propose the application of in situ Raman spectroscopy techniques under extreme thermodynamic conditions combined with diffraction measurements, as the most appropriate tools for addressing these physical problems. (AU)

Scientific publications

(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CHACALIAZA-RICALDI, J.; LOZANO, C. G.; CLABEL, H. J. L.; FERRI, F. A.; RODRIGUES, A. D.; MESSADDEQ, Y.; RIVERA, V. A. G.; MAREGA, E.. Influence of Pr3+ions on the structural properties of Er3+-doped tellurite-tungsten glasses. Journal of Non-Crystalline Solids, v. 616, p. 8-pg., 2023-07-07. (21/11484-5, 13/07276-1, 22/05478-5, 21/13974-0)

PIZANI, P. S.; CUNHA, T. R.; PENA, R. B.; PICININ, A.; RODRIGUES, A. D.; RINO, J. P.. Temperature effects on the structure of lead metasilicate glass, supercooled liquid, crystal, and liquid: Vibrational anharmonicity and configurational transformations analyzed by molecular dynamics and Raman scattering. Journal of Non-Crystalline Solids, v. 636, p. 4-pg., 2024-05-10. (17/11868-2, 19/12383-8, 21/13974-0, 13/07793-6)

IANHEZ-PEREIRA, CAMILA; KURIAKOSE, AKHIL; RODRIGUES, ARIANO DE GIOVANNI; SILVA, ANA LUIZA COSTA; JEDRKIEWICZ, OTTAVIA; BOLLANI, MONICA; DE GODOY, MARCIO PERON FRANCO. Evaluation of microscale crystallinity modification induced by laser writing on Mn₃O₄ thin films. Optical Materials, v. 147, p. 8-pg., 2023-11-25. (21/13974-0)

BATISTAO, BRUNA FERNANDA; PINOTTI, VITOR EDUARDO; LIMA, MOYSES LEITE DE; RODRIGUES, ARIANO DE GIOVANNI; AMANCIO-FILHO, SERGIO DE TRAGLIA; GARGARELLA, PITER. Wet chemical surface functionalization of AA2017 powders for additive manufacturing. Powder Technology, v. 443, p. 15-pg., 2024-06-07. (20/09544-7, 22/05528-2, 17/27031-4, 22/02760-1, 21/13974-0)

PENA, R. B.; CUNHA, T. R.; GOMES, E. O.; SAMPAIO, D. V.; RODRIGUES, A. D.; ANDRES, J.; PIZANI, P. S.. Vibrational Raman modes of alamosite (PbSiO₃): Combining density functional theory calculations and in situ temperature experiments. Journal of Raman Spectroscopy, v. 54, n. 12, p. 6-pg., 2023-10-09. (13/07793-6, 17/11868-2, 19/12383-8, 16/15962-0, 21/13974-0)

PENA, R. B.; DESCHAMPS, T.; LE FLOCH, S.; BERTHELOT, A.; ROMEO, E.; CUNHA, T. R.; PEITL, O.; RODRIGUES, A. D.; MARTINET, C.; PIZANI, P. S.. Cold- and hot-densification of a depolymerized glass: A multiscale vibrational investigation of PbSiO3. Journal of Non-Crystalline Solids, v. 646, p. 7-pg., 2024-10-05. (19/11446-6, 13/07793-6, 17/11868-2, 19/12383-8, 21/13974-0)

AMORIM, CLEBER A.; DE ARAUJO, ESTACIO P.; DE GIOVANNI RODRIGUES, ARIANO; CHIQUITO, ADENILSON J.. Surface modification of tin oxide nanowires through hydroxyl group anchoring. MRS COMMUNICATIONS, v. N/A, p. 8-pg., 2024-09-13. (19/18963-6, 21/13974-0)