Stoichiometric amounts of Ln(NO3)3*6H2O(Aldrich, 99.9%, metal basis), Ba(NO3)2 (Aldrich, 99+%), Sr(NO3)2 (Aldrich, 99+%), Co(NO3)2*6H2O (Aldrich, 98+%), and Fe(NO3)3*6H2O (Aldrich, 98%) were dissolved in distilled water with proper amount of glycine. The solutions were heated up to 350degC in air and followed by combustion to form fine powders, which were calcined at 600degC for 4 hours. The resulting powders were then grinded and calcined again at 900degC for 4 hours.
Ln(NO3)3*6H2O
99.9%
%
Sr(NO3)2
99+%
%
Co(NO3)2*6H2O
98+%
%
Fe(NO3)3*6H2O
98%
%
solutions
heated
up to 350degC
degC
fine powders
calcined
600degC
degC
fine powders
calcined
4 hours
hours
resulting powders
calcined
900degC
degC
resulting powders
calcined
4 hours
hours