Structural and magnetic characterization of LaFe1-xAlxO3 (x=0 and 0.2) orthoferrites synthesized by gelatin method

Araújo, José Humberto de; Pimentel, Patrícia Mendonça; Dutra, J. L. S.; Lima, A. C.; Bagnato, Osmar Roberto; Costa, Asenete Frutuoso; Oliveira, Rosane Maria Pessoa Betanio

Structural and magnetic characterization of LaFe1-xAlxO3 (x=0 and 0.2) orthoferrites synthesized by gelatin method

Página do item simplificado Estatísticas

dc.contributor.author	Araújo, José Humberto de
dc.contributor.author	Pimentel, Patrícia Mendonça
dc.contributor.author	Dutra, J. L. S.
dc.contributor.author	Lima, A. C.
dc.contributor.author	Bagnato, Osmar Roberto
dc.contributor.author	Costa, Asenete Frutuoso
dc.contributor.author	Oliveira, Rosane Maria Pessoa Betanio
dc.date.accessioned	2020-07-02T20:07:00Z
dc.date.available	2020-07-02T20:07:00Z
dc.date.issued	2017-07
dc.description.resumo	The rare-earth orthoferrites (LnFeO3) are promising materials for various applications, such as chemical sensors, cathode for SOFC, catalysts, among others. In general, these oxides are synthesized at temperatures higher than 700 °C. In this work, nanocrystalline LaFe1-xAlxO3 (x=0, x=0.2) powders were synthesized by a method that uses gelatin as organic precursor and heat treated at 400, 600 and 800 °C. The structural and magnetic characterization of powders was carried out by X-ray diffraction (XRD) and vibrating sample magnetometry (VSM). Morphological analysis was performed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The XRD patterns revealed the formation of orthoferrites single phase since 400°C. The powders exhibited weak ferromagnetic behavior at room temperature where the values of saturation magnetization, remanence and coercivity varied with the doping and heat treatment temperature	pt_BR
dc.identifier.citation	PIMENTEL, P.M.; DUTRA, J. L. S.; LIMA, A.C.; ARAÚJO, J.H.; BAGNATO, O.; COSTA, A.F.; OLIVEIRA, R.M.P.B. . Structural and magnetic characterization of LaFe1-xAlxO3 (x=0 and 0.2) orthoferrites synthesized by gelatin method. Materials Science Forum (ONLINE), v. 899, p. 227-231, 2017. Disponível em: https://www.researchgate.net/publication/318122259_Structural_and_Magnetic_Characterization_of_LaFe1-xAlxO3_x_0_and_02_Orthoferrites_Synthesized_by_Gelatin_Method Acesso em: 25 jun 2020. http://doi.org/10.4028/www.scientific.net/MSF.899.227	pt_BR
dc.identifier.doi	10.4028/www.scientific.net/MSF.899.227
dc.identifier.issn	1662-9752
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29401
dc.language	en	pt_BR
dc.publisher	Trans Tech Publications	pt_BR
dc.subject	Orthoferrites	pt_BR
dc.subject	Gelatin	pt_BR
dc.subject	Magnetic properties	pt_BR
dc.title	Structural and magnetic characterization of LaFe1-xAlxO3 (x=0 and 0.2) orthoferrites synthesized by gelatin method	pt_BR
dc.type	article	pt_BR