Publicações Recentes

• Converting Faraday rotation into magnetization in europium chalcogenides. S. C. P. van Kooten, P. A. Usachev, X. Gratens, A. R. Naupa, V. A. Chitta, G. Springholz, and A. B. Henriques. J. Appl. Phys. 126, 095701 (2019).
• Effects of microstructure on the magnetic properties of polycrystalline NiMn₂O₄ spinel oxides. A. J. Freitas Cabral, C. M. R. Remédios, X. Gratens, and V. A. Chitta. J. Mag. Mag. Mat. 469, 108 (2019).
• Ultrafast Light Switching of Ferromagnetism in EuSe. A. B. Henriques, X. Gratens, P. A. Usachev, V. A. Chitta, and G. Springholz. Phys. Rev. Lett. 120, 217203 (2018).
• Evidence of Cr³⁺ and Cr⁴⁺ Coexistence in Chromium-Doped SnO₂ Nanoparticles: A Structural and Magnetic Study. Juan C. R. Aquino, Fermin H. Aragón, José A. H. Coaquira, Xavier Gratens, Valmir A. Chitta, Ismael Gonzales, Waldemar A. A. Macedo, and Paulo C. Morais. J. Phys. Chem. C 121, 21670 (2017).
• Distant exchange interactions in Cd$_1-x$Mn_xS from magnetization steps method. X. Gratens and V. Chitta. J. Appl. Phys. 122, 043905 (2017).
• Magnetite Nanoparticles Encapsulated with PCL and Poloxamer by Nano Spray Drying Technique. Caio Perecin, Natalia Cerize, Valmir Chitta, Xavier Gratens, Patricia Léo, Adriano de Oliveira, Sergio Yoshioka. Nanoscience and Nanotechnology 6, 68 (2016).
• Magnetic and structural properties of Fe-implanted cubic GaN. V. A. N. Righetti, X. Gratens, V. A. Chitta, M. P. F. de Godoy, A. D. Rodrigues, E. Abramof, J. F. Dias, D. Schikora, D. J. As, and K. Lischka. J. Appl. Phys. 120, 103901 (2016).
• Systematic study of transport via surface and bulk states in Bi₂Te₃ topological insulator. S. de Castro, M. L. Peres, V. A. Chitta, X. Gratens, D. A. W. Soares, C. I. Fornari, P. H. O. Rappl, E. Abramof, and N. F. Oliveira Jr. Mater. Res. Express 3, 075905 (2016).
• Room temperature ferromagnetism promoted by defects at zinc sites in Mn-doped ZnO. V. M. de Almeida, A. Mesquita, A. O. de Zevallos, N. C. Mamani, P. P. Neves, X. Gratens, V. A. Chitta, W. B. Ferraz, A. C. Doriguetto, A. C. S. Sabioni, H. B. de Carvalho. J. Alloys and Comp. 655, 406 (2016).
• Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties. A. Mesquita, F. P. Rhodes, R. T. da Silva, P. P. Neves, A. O. de Zevallos, M. R. B. Andreeta, M. M. de Lima Jr., A. Cantarero, I. S. da Silva, M. A. Boselli, X. Gratens, V. A. Chitta, A. C. Doriguetto, W. B. Ferraz, A. C. S. Sabioni, H. B. de Carvalho. J. Alloys Comp. 637, 407 (2015).
• Systematic study of doping dependence on linear magnetoresistance in p-PbTe. J. M. Schneider, M. L. Peres, S. Wiedmann, U. Zeitler, V. A. Chitta, E. Abramof, P. H. O. Rappl, S. de Castro, D. A. W. Soares, U. A. Mengui, and N. F. Oliveira Jr. Appl. Phys. Lett. 105, 162108 (2014).
• Experimental investigation of spin-orbit coupling in n-type PbTe quantum wells. M. L. Peres, H. S. Monteiro, V. A. Chitta, S. de Castro, U. A. Mengui, P. H. O. Rappl, N. F. Oliveira Jr., E. Abramof, and D. K. Maude. J. Appl. Phys. 115, 093704 (2014).
• Long-range ferromagnetic order induced by a donor impurity band exchange in SnO₂:Er³⁺ nanoparticles. F. H. Aragon, V. A. Chitta, J. A. H. Coaquira, P. Hidalgo, and H. F. Brito. J. Appl. Phys. 114, 203902 (2013).
• A luminescent supramolecular assembly composed of a single-walled carbon nanotube and a molecular magnet precursor. G. A. M. Sáfar, T. R. G. Simões, A. M. de Paula, X. Gratens, V. A. Chitta, and H. O. Stumpf. J. Nanopart. Res. 15, 1436 (2013).
• Evidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO. M. P. F. de Godoy, A. Mesquita, W. Avansi, P. P. Neves, V. A. Chitta, W. B. Ferraz, M. A. Boselli, A. C. S. Sabioni, H. B. de Carvalho. J. Alloys Comp. 555, 315 (2013).
• Structural and magnetic characterization of colloidal CdMnS. J. R. L. Fernandez, V. A. Chitta, X. Gratens, K. Krambrock, M. de Souza-Parise, V. N. Freire, and P. C. Morais. Revista Mexicana de Física S 58, 73 (2012).
• Conduction mechanisms in p-type Pb_1-xEu_xTe alloys in the insulator regime. M. L. Peres, R. M. Rubinger, L. H. Ribeiro, C. P. L. Rubinger, G. M. Ribeiro, V. A. Chitta, P. H. O. Rappl, and E. Abramof. J. Appl. Phys. 111, 123708 (2012).
• Conduction mechanisms on annealed semi-insulating GaAs samples. M. L. Peres, A. S. Chaves, R. M. Rubinger, V. A. Chitta, G. M. Ribeiro, and A. G. de Oliveira. Semicond. Sci. Technol. 26, 125014 (2011).
• Spin-orbit coupling in n-type PbTe/PbEuTe quantum wells. M. L. Peres, V. A. Chitta, D. K. Maude, N. F. Oliveira Jr., P. H. O. Rappl, A. Y. Ueta and E. Abramof. Acta Phys. Pol. A 119, 602 (2011).
• Growth of EuTe islands on SnTe by molecular beam epitaxy. B. Díaz, A. Malachias, P. H. O. Rappl, E. Abramof, V. A. Chitta, and A. B. Henriques. J. Crystal Growth 312, 2828 (2010).
• Absence of ferromagnetic order in high quality bulk Co-doped ZnO samples. H. B. de Carvalho, M. P. F. de Godoy, R. W. D. Paes, M. Mir, A. Ortiz de Zevallos, F. Iikawa, M. J. S. P. Brasil, V. A. Chitta, W. B. Ferraz, M. A. Boselli, and A. C. S. Sabioni. J. Appl. Phys. 108, 033914 (2010).