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Mossbauer and xrd study of the Fe0.5 Si0.5 system produced by mechanical alloying and sinterization
(Revista Mexicana de Física, 2011-12)
In this work Fe0.5Si0.5 samples were mechanically alloyed at different milling times. The sample milled during 48 hours presents the FeSi simple cubic and the BCC Fe phases, with lattice parameters of 4.490 and 2.825 A, ...
Efeitos da matéria orgânica sobre óxidos de ferro em um latossolo vermelho
(Universidade Estadual Paulista (Unesp), 2000-05)
Devido ao elevado nível de umidade e as altas temperaturas nos solos tropicais, a matéria orgânica apresenta baixa estabilidade nessas regiões. As reações de decomposição da matéria orgânica sempre levam à produção de ...
Efeitos da matéria orgânica sobre óxidos de ferro em um latossolo vermelho
(Universidade Estadual Paulista (UNESP), 2014)
Synthesis and Characterization of superparamagnetic Iron Oxide Nanoparticles for bio-medical applications
(Springer, 2010-12)
Monodisperse iron oxide nanoparticles (NPs) of 4 nm were obtained through high-temperature solution phase reaction of iron (III) acetylacetonate with 1, 2-hexadecanediol in the presence of oleic acid and oleylamine. The ...
Efeitos da matéria orgânica sobre óxidos de ferro em um latossolo vermelho
(Universidade Estadual Paulista (Unesp), 2000-05)
Devido ao elevado nível de umidade e as altas temperaturas nos solos tropicais, a matéria orgânica apresenta baixa estabilidade nessas regiões. As reações de decomposição da matéria orgânica sempre levam à produção de ...
Approximate total Fe content determined by Mössbauer spectrometry: Application to determine the correlation between gamma-ray-emitter activities and total content of Fe phases in soils of the Province of Buenos Aires, Argentina
(Elsevier, 2016-10)
Pearson correlation coefficients between 40K, 226Ra and 232Th activities and the total Fe phase fractions yielded by Mössbauer spectroscopy have been calculated for soils of the Province of Buenos Aires, Argentina. Total ...
Magnetic hysteresis loop shift in NiFe(2)O(4) nanocrystalline powder with large grain boundary fraction
(ELSEVIER SCIENCE BV, 2010)
Magnetic properties of nanocrystalline NiFe(2)O(4) spinel mechanically processed for 350 h have been studied using temperature dependent from both zero-field and in-field (57)Fe Mossbauer spectrometry and magnetization ...
Mössbauer and X-ray study of the Fe 65 Ni 35 invar alloy obtained by mechanical alloying
(Universidad Autónoma de Occidente, 2013-03-13)
Fe65Ni35 samples were prepared by mechanical alloying (MA) with milling times of 5, 6, 7, 10 and 11 h, using a ball mass to powder mass ratio of 20:1 and at 280 rpm. The samples were characterized by X-ray diffraction ...
Preparação, caracterização e aplicação de um material catalisador para os processos fenton heterogêneo e fotocatálise heterogênea
(Universidade Federal de Minas GeraisUFMG, 2010-06-15)
In this work it was prepared a catalytic system using Fe(III) ions supported on an autoclaved cellular concrete. After characterization by X-ray powder diffraction (DRX), 57Fe-Mössbauer spectroscopy, Thermogravimetric ...