in neat (no solvent) stoich. mixt. of oxides was ground; pressed into bars; set in alumina crucible; put in silica tube; sealed under vac.; fired at 1050°C for 12 h; identified by X-ray diffraction;
参考文献
Journal of Solid State Chemistry, , vol. 183, # 2 p. 344 - 349
in neat (no solvent) coprecipitation from aqueous solns.; powders dried at 120°C, calcinated (500.degee.C) and roasted (1400°C) in a CO atmosphere for 1 h; rapid cooling;
参考文献
Inorganic Materials (Transl. of Neorg. Mater.), , vol. 24, p. 372 - 375
Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, , vol. 24, p. 457 - 461
