• Influence of impurities on the luminescence of Er3+ doped BaTiO3 nanophosphors 

      Webler, Geovana Dresch; Zapata, Maximiliano Jesús Moreno; Maciel, Glauco Santos; Patra, Amitava; Hickmann, Jandir Miguel; Alencar, Marcio André Rodrigues Cavalcanti de (2014) [Artigo de periódico]
      The influence of the presence of barium carbonate (BaCO3) phase on the luminescence properties of barium titanate nanocrystals (BaTiO3) powders was investigated. Structural and optical characterizations of erbium (Er3+) ...
    • Structural and spectroscopic investigation of the charge-ordered, short-range ordered, and disordered phases of the Co3O2BO3 ludwigite 

      Galdino, Carlos William; Freitas, Daniele; Medrano, Cynthia Paola Contreras; Sánchez, D. R.; Souza, Rodolfo Tartaglia; Rabello, L. P.; Mendonça, Alberto Aguiar; Ghivelder, Luis; Continentino, Mucio Amado; Zapata, Maximiliano Jesús Moreno; Pinheiro, Carlos Basílio; Azevedo, Gustavo de Medeiros; Rodríguez-Velamazán, J. A.; Garbarino, Gaston; Núñez-Regueiro, M.D.; Granado, E. (2021) [Artigo de periódico]
      Charge ordering is prone to occur in crystalline materials with mixed-valence ions. It is presumably accompanied by a structural phase transition, with possible exceptions in compounds that already present more than one ...