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foerfarande foer framstaellning av i polykristallin granat i polykristallin granat och motsvarande monokristallin granat
foerfarande foer framstaellning av i polykristallin granat i polykristallin granat och motsvarande monokristallin granat
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机译:在多晶石榴石和相应的单晶石榴石中生产多晶石榴石的方法
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摘要
A process for the manufacture of a polycrystalline garnet and to the corresponding monocrystal. The process comprises the following steps: (1) a solution containing the salts of the constituent cations of the garnet, in the proportions corresponding to the composition of the latter, is prepared; (2) corresponding hydroxides are co-precipitated by means of a base in order to obtain a co-hydroxide; (3) if appropriate, the co-hydroxide is left to age; (4) it is filtered off; (5) it is washed; (6) it is dried; and (7) it is then calcined at a temperature above the temperature for the formation of the desired garnet structure. The monocrystals obtained by Czochralski drawing of the polycrystalline garnets of the invention can be used, in particular, as substrates in magnetic bubble memory devices.
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