Browsing by Author Costa, Geraldo Magela da

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Issue DateTitleAuthor(s)
1995Temperature dependence of the hyperfine parameters of maghemite and Al-substituted maghemites.Costa, Geraldo Magela da; Grave, Eddy De; Bowen, L. H.; Bakker, P. M. A. de; Vandenberghe, Robert Emile
1994The center shift in the Mössbauer spectra of maghemite and aluminum maghemites.Costa, Geraldo Magela da; Grave, Eddy De; Bowen, L. H.; Vandenberghe, Robert Emile; Bakker, P. M. A. de
2006The effect of thermal treatment on the 57Fe Mössbauer spectrum of beryl.Costa, Geraldo Magela da; Polli, Gabriel de Oliveira; Kahwage, Márcio A.; Grave, Eddy De; Sabioni, Antônio Claret Soares; Mendes, Julio Cesar
2013The spectroscopic characterization of the sulphate mineral ettringite from Kuruman manganese deposits, South Africa.Frost, Ray Leslie; López, Andrés; Xi, Yunfei; Cipriano, Ricardo Augusto Scholz; Costa, Geraldo Magela da; Lima, Rosa Malena Fernandes; Granja, Amanda
2001The unusual Mössbauer spectrum of beryl.Viana, Rúbia Ribeiro; Costa, Geraldo Magela da; Evangelista, Hanna Jordt; Stern, Willem B.
2009The use of diffuse reflectance spectroscopy for the characterization of iron ores.Costa, Geraldo Magela da; Barrón, Vidal; Ferreira, César Mendonça; Torrent, José
2012Transformações mineralógicas e cristaloquímicas decorrentes dos ensaios termais em argilas cauliníticas ferruginosas.Ferreira, Mônica Martiniano; Varajão, Angélica Fortes Drummond Chicarino; Carrera, Ana Mercedes Morales; Sánchez, Miguel Genaro Peralta; Costa, Geraldo Magela da
1995Variable-temperature Mössbauer spectroscopic study of nano-sized maghemite and Al-substituted maghemites.Costa, Geraldo Magela da; Grave, Eddy De; Bowen, L. H.; Bakker, P. M. A. de; Vandenberghe, Robert Emile
2013Vibrational spectroscopy of the mineral meyerhofferite CaB3O3(OH)5 H2O - an assessment of the molecular structure.Frost, Ray Leslie; López, Andrés; Xi, Yunfei; Cipriano, Ricardo Augusto Scholz; Costa, Geraldo Magela da; Belotti, Fernanda Maria; Lima, Rosa Malena Fernandes
2016Water determination in iron oxyhydroxides and iron ores by Karl Fischer titration.Cunha, Camila Cristina Rodrigues Ferreira da; Costa, Geraldo Magela da
1992X-ray differential line broadening on tabular haematites.Costa, Geraldo Magela da; Jesus Filho, M. F. de