Title :
Nanoparticle synthesis of La1-xSrxMnO3 (0.1, 0.2 and 0.3) perovskites
Author :
Marques, R.F.C. ; Jafelicci, M., Jr. ; Paiva-Santos, C.O. ; Jardim, R.F. ; Souza, J.A. ; Varanda, L.C. ; Godoi, R.H.M.
Author_Institution :
Instituto de Quimica de Araraquara, UNESP, Sao Paulo, Brazil
fDate :
9/1/2002 12:00:00 AM
Abstract :
Synthesis of La1-xSrxMnO3 (x=0.1, 0.2 and 0.3) by homogenous coprecipitation method using urea as precipitant agent is reported. The particles are smaller than 200 nm after heating at 950°C. Temperature dependence of the electrical resistivity was found to be similar to the reported value for single crystals of these manganites.
Keywords :
X-ray diffraction; ceramics; colossal magnetoresistance; differential thermal analysis; ferromagnetic materials; lanthanum compounds; magnetic particles; metal-insulator transition; nanostructured materials; powder technology; precipitation (physical chemistry); strontium compounds; transmission electron microscopy; (LaSr)MnO3; 200 nm; 950 C; DTA curves; electrical resistivity; homogenous coprecipitation method; homogenous nucleation; in-situ ligand formation; magnetization; metal-insulator transition; nanoparticle synthesis; perovskite manganites; powder X-ray diffraction; temperature dependence; transmission electron microscopy; urea precipitant agent; Colossal magnetoresistance; Crystals; Electric resistance; Lanthanum; Powders; Resistance heating; Solvents; Strontium; Temperature dependence; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.803145
