A5040180164- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Carbon Nanotubes in Composites
- Boron and Carbon Nanomaterials Research
- Electromagnetic Launch and Propulsion Technology
- Graphene research and applications
- Diamond and Carbon-based Materials Research
- Solid-state spectroscopy and crystallography
- Organic and Molecular Conductors Research
- Thermal properties of materials
- Biosensors and Analytical Detection
- Advanced Condensed Matter Physics
- Gold and Silver Nanoparticles Synthesis and Applications
- Nanoparticles: synthesis and applications
- Innovative Microfluidic and Catalytic Techniques Innovation
- Multiferroics and related materials
- Structural Response to Dynamic Loads
- Magnetism in coordination complexes
- Insect and Arachnid Ecology and Behavior
- Thermal Expansion and Ionic Conductivity
- Quantum Dots Synthesis And Properties
- Tribology and Wear Analysis
- Ferroelectric and Piezoelectric Materials
Universidade Federal do Ceará
2019-2022
Faculdade Única
2016
Universidade Federal do Pará
2016
Amazon Research Foundation
2016
Studies of perovskite-like [C<sub>3</sub>N<sub>2</sub>H<sub>5</sub>][Mg(HCOO)<sub>3</sub>] revealed a temperature-induced phase transition at 451 K and pressure-induced transitions near 3 7 GPa.
[H<sub>3</sub>N(CH<sub>3</sub>)<sub>4</sub>NH<sub>3</sub>][Mn<sub>2</sub>(HCOO)<sub>6</sub>] shows ferroelectric and magnetic order below 350 9 K, respectively.
Isolated linear carbon chains (LCCs) encapsulated by multiwalled nanotubes are studied under hydrostatic pressure (P) via resonance Raman scattering. The LCCs' spectroscopic signature C band around 1850 cm^{-1} softens linearly with increasing P. A simple anharmonic force-constant model not only describes such softening but also shows that the Young's modulus (E), Grüneisen parameter (γ), and strain (ϵ) follow universal P^{-1} P^{2} laws, respectively. In particular, γ presents a unified...
Linear carbon chains (LCCs) are one-dimensional materials with unique properties, including high Debye temperatures and restricted selection rules for phonon interactions. Consequently, their Raman C-band frequency's temperature dependence is a probe to thermal which well described within the formalism even at room temperatures. Therefore, basis on semiempirical approach we show how use C band evaluate LCCs' internal energy, heat capacity, coefficient of expansion, strain, Gr\"uneisen...
Received 22 December 2021Accepted 19 April 2022DOI:https://doi.org/10.1103/PhysRevLett.128.219602© 2022 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasAnharmonic lattice dynamicsCompressive strengthElasticityMechanical & acoustical propertiesPressure effectsStressPhysical Systems1-dimensional systemsTechniquesLattice models in condensed matterPressure techniquesRaman spectroscopyCondensed Matter, Materials Applied Physics