Layered structure ferrotitanium lanthanum bismuth cobaltate ceramic with multiferroic and preparation method thereof
A technology of lanthanum bismuth iron cobaltate and layered structure is applied in the field of preparation of oxide ceramic materials, which can solve the problems of lack of sight, and achieve the effects of improving ferroelectric and magnetic properties, good stability and facilitating industrial production.
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[0023] The preparation process and conditions used in the examples:
[0024] (1) Preparation of sample materials:
[0025] 1) Select analytical pure bismuth oxide (Bi 2 O 3 ), analysis of pure iron trioxide (Fe 2 O 3 ), analysis of pure lanthanum oxide (LaO 2 ), analysis of pure cobalt trioxide (Co 2 O 3 ) And spectral pure titanium oxide (TiO 2 ) Is the raw material, and the raw materials are all products of Shanghai Chemical Reagent Company. The raw materials are baked in an oven at 110°C for 8 hours before weighing.
[0026] 2) Preparation of BLT powder: Ball mill the weighed bismuth oxide, lanthanum oxide and titanium oxide (shown in Table 1) with anhydrous ethanol as the medium. After 24 hours of ball milling and mixing, they are dried and placed in an alumina crucible. Press lightly, and perform synthesis for 8 hours, 16 hours, and 24 hours at 760°C, 780°C, and 800°C in air. After each synthesis, ball milling and drying are performed, and the ball milling time is 24 hours to p...
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