Determination of the Particle Size of Ultrafine Powders of Manganite Solid Solutions (Nd, Gd)xCa1-xMnO3 by Photon Correlation Spectroscopy
Abstract
The prospects of using photon correlation spectroscopy (dynamic light scattering method) in determination of the particle size in ultrafine powders of perovskite-like rare earth manganites milled in a high energy planetary mill are discussed. The main attention is paid to stabilizing of the powder in a dispersion liquid before measurements. Benzalkonium chloride exhibited the best stabilizing properties compared to other tested surfactants. The powder susceptible to agglomeration is subjected to ultrasonic treatment for 1 h. The results of the particles size measurement obtained by dynamic light scattering are compared with data of x-ray diffraction analysis.
About the Authors
S. Kh. Estemirova
Институт металлургии УрО РАН
Russian Federation
Russian Federation
N. V. Pechischeva
Институт металлургии УрО РАН
Russian Federation
Russian Federation
G. A. Kozhina
Институт металлургии УрО РАН
Russian Federation
Russian Federation
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Review
For citations:
Estemirova S.Kh., Pechischeva N.V., Kozhina G.A. Determination of the Particle Size of Ultrafine Powders of Manganite Solid Solutions (Nd, Gd)xCa1-xMnO3 by Photon Correlation Spectroscopy. Industrial laboratory. Diagnostics of materials. 2015;81(12):26-31. (In Russ.)
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