Single-phase multiferroic ceramic material and preparation method thereof
A multiferroic ceramic, single-phase technology, applied in the field of single-phase multiferroic ceramics and its preparation, can solve the problems of weak ferromagnetism of bismuth ferrite, etc., and achieve the effect of simple preparation method
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specific Embodiment approach 1
[0030] Specific embodiment one: the chemical expression of the single-phase multiferroic ceramic material of this embodiment is (1-x)Ba(Zr 0.2 Ti 0.8 )O 3 –x(Ba 0.7 Ca 0.3 )(Fe 0.5 Ta 0.5 )O 3 , where x=0.2~0.4, abbreviated as BXT.
specific Embodiment approach 2
[0031] Specific embodiment two: the preparation method of the single-phase multiferroic ceramic material described in specific embodiment one, carries out according to the following steps:
[0032] 1. Barium carbonate (BaCO 3 ), calcium carbonate (CaCO 3 ), titanium dioxide (TiO 2 ), ferric oxide (Fe 2 o 3 ), tantalum pentoxide (Ta 2 o 5 ) and zirconium dioxide (ZrO 2 ) powder according to
[0033] (1-x)Ba(Zr 0.2 Ti 0.8 )O 3 –x(Ba 0.7 Ca 0.3 )(Fe 0.5 Ta 0.5 )O 3 The stoichiometric ratio is weighed and mixed uniformly to obtain a mixed powder, wherein x=0.2~0.4;
[0034] 2. Add alcohol to the mixed powder obtained in step 1, and ball mill in a ball mill at a speed of 200-400rpm for 12-48 hours to obtain a suspension A;
[0035] 3. Dry the suspension A obtained in step 2 to obtain powder A, and then put the powder A into a tube furnace and keep it at a temperature of 1100-1250°C for 3-6 hours to obtain a pre-calcined powder ;
[0036] 4. Add alcohol to the calc...
specific Embodiment approach 3
[0039] Embodiment 3: This embodiment differs from Embodiment 2 in that the drying temperature in Step 2 is 80° C. to 100° C. Others are the same as Embodiment 2.
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