Title :
Rietveld refinement of nanostructural LaMnO3+δ perovskite-type manganite
Author :
Batdemberel, G. ; Bulgan, G. ; Dinnebier, R.E. ; Munkhbaatar, P. ; Sangaa, D. ; Chadraabal, Sh
Author_Institution :
Sch. of Mater. Sceince, Mongolian Univ. of Sci. & Technol., Ulaanbaatar, Mongolia
Abstract :
The nanostructural LaMnO3+δ perovskite manganite investigated by x-ray diffraction (XRD). Our sample have been synthesized by the amorphous heteronuclear complexing method at 800°C temperature. X-ray diffraction analysis using Rietveld refinement show that our sample is single phase and crystallize in the rhombohedral distorted perovskite structure with R3̅c space group and with lattice parameters of a = b = 0.550 and c =1.334nm. It was established considerable distortion of oxygen atom in the rhombohedral structure from own initial positions 4b. Our results indicate that oxygen excess parameter for LaMnO3+δ is 0.29. We determined the crystallite size 39 - 47 nm of LaMnO3+δ using Scherrer equation from x-ray diffraction pattern.
Keywords :
X-ray diffraction; crystal structure; crystallites; lanthanum compounds; lattice constants; nanofabrication; nanostructured materials; LaMnO3+δ; Scherrer equation; X-ray diffraction; crystallite; heteronuclear complexing method; lattice parameters; nanostructural perovskite manganite; rhombohedral distorted perovskite structure; space group; temperature 800 degC; Manganese; X-ray scattering; Rietveld method; crystal structure; crystallite size; oxygen vacancies; perovskite; x-ray diffraction;
Conference_Titel :
Strategic Technology (IFOST), 2010 International Forum on
Conference_Location :
Ulsan
Print_ISBN :
978-1-4244-9038-7
Electronic_ISBN :
978-1-4244-9036-3
DOI :
10.1109/IFOST.2010.5668011
