Mesostructure of yttrium and aluminum basic salts coprecipitated from aqueous solutions under ultrasonic treatment

Yapryntsev, A. D.; Kuznetsov, S. V.; Gubanova, N. N.; Fedorov, P. P.; Pipich, V.; Ezdakova, K. V.; Kopitsa, G. P.; Ivanov, V. K.; Baranchikov, A. Ye.

doi:10.1134/S1027451016010365

Journal Article

FZJ-2016-07671

Mesostructure of yttrium and aluminum basic salts coprecipitated from aqueous solutions under ultrasonic treatment

Yapryntsev, A. D. (Corresponding author) ; Gubanova, N. N. ; Kopitsa, G. P. ; Baranchikov, A. Y. ; Kuznetsov, S. V. ; Fedorov, P. P. ; Ivanov, V. K. ; Ezdakova, K. V. ; Pipich, V.FZJ*

2016
MAIK Nauka/Interperiodics Publ. Moscow

Journal of surface investigation 10(1), 177 - 186 (2016) [10.1134/S1027451016010365]

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Please use a persistent id in citations: http://hdl.handle.net/2128/13416 doi:10.1134/S1027451016010365

Abstract: The influence of ultrasonic treatment on the micro􏰀 and mesostructures and fractal characteristics of amorphous powders of yttrium and aluminum basic salts (precursors for the synthesis of neodymium􏰀acti􏰀 vated yttrium–aluminum garnet, Nd:YAG, which were coprecipitated from aqueous solutions by different precipitants, namely, aqueous solutions of ammonia and ammonium bicarbonate) is studied. It is established that ultrasonication applied during the precipitation of the aforementioned powders does not significantly change the structure of the obtained materials but always leads to the formation of structures with a less homogeneous nuclear density, i.e., a more developed surface area. Moreover, the ultrasound􏰀assisted precip􏰀 itation of the hydroxocompounds by ammonium hydrocarbonate results in a certain increase in the surface fractal dimension and the degree of aggregation for mass􏰀fractal aggregates of particles.

Keyword(s): Chemical Reactions and Advanced Materials (1st) ; Materials Science (2nd)

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