Perovskite nanoparticles: Preparation by reactive milling and magnetic characteristics

La 0.7Sr 0.3MnO 3 and La 0.7Ca 0.3MnO 3 nanoparticles were synthesized by reactive milling method. Grain size determined from XRD, TEM, and magnetization measurements show an average diameter ⩽18 nm and decreasing with increasing milling time. DC and AC magnetic measurements evidenced an interacting...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2006-09, Vol.304 (1), p.133-137
Main Authors: Phuc, N.X., Nguyen, Ha M., Manh, D.H., Hung, L.T., Tuong, L.T.C., Hong, L.V., Yao, Yeong-Der
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Diamagnetism, paramagnetism and superparamagnetism
Exact sciences and technology
Grain structure and morphology
Interacting superparamagnetism
Magnetic properties and materials
Magnetic properties of nanostructures
Magnetotransport phenomena, materials for magnetotransport
Manganites
Perovskite nanoparticles
Physics
Reactive milling
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Summary:La 0.7Sr 0.3MnO 3 and La 0.7Ca 0.3MnO 3 nanoparticles were synthesized by reactive milling method. Grain size determined from XRD, TEM, and magnetization measurements show an average diameter ⩽18 nm and decreasing with increasing milling time. DC and AC magnetic measurements evidenced an interacting superparamagnetism due to clustering of perovskite nanoferromagnets with spin dynamic time in range of 10 −9–10 −10 s.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2006.01.168