Preparation method of a novel spinel multiferroic oxide ceramic
A technology of oxide ceramics and spinel, which is applied in the field of preparation of new spinel multiferroic oxide ceramics, can solve the problems of immature preparation process and wide application range, and achieve the effect of stable performance and high purity
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[0023] The embodiment of the present invention provides a novel spinel multiferroic oxide (MnV 2 O 4 ) Ceramic preparation methods, such as figure 1 Shown, including:
[0024] Step (1), the manganese monoxide (MnO) and vanadium trioxide (V 2 O 3 ), according to MnV 2 O 4 The ingredients are weighed at a stoichiometric ratio of, and placed in a glove box for grinding with a mortar, the gas in the glove box is replaced by argon, and the grinding time with the mortar is greater than or equal to 30 minutes;
[0025] Among them, because the two kinds of raw materials are relatively easy to oxidize, it is necessary to place the raw materials in a glove box replaced with high-purity argon in advance, and fully grind them for more than 30 minutes, for example: weigh the raw materials manganese monoxide and vanadium trioxide in proportion After the measurement, put it in a glove box replaced with high-purity argon, and use a mortar to fully grind for 60 minutes.
[0026] Step (2), pressing th...
example 1
[0049] (1) Weigh manganese monoxide (MnO) and vanadium trioxide (V) in a molar ratio of 1:1 2 O 3 ) Raw materials, put the weighed raw materials into a glove box replaced with high-purity argon three times, and grind them for 60 minutes;
[0050] (2) Weigh 2 g of the ground powder, put the weighed powder into a mold with a diameter of 10 mm, press it into a shape at a pressure of 50 MPa, and hold the pressure for 1 min;
[0051] (3) Put the pressed cylinder into a quartz tube that has been cleaned beforehand (the quality of the discharged material must be strictly controlled below 2g to prevent the quartz tube from occurring at high temperatures due to the volatilization of the raw materials during the pre-sintering process Explosion), and then use a vacuum pump to extract the air in the quartz tube. The entire vacuuming process is not less than 15 minutes. The actual package is as attached figure 2 Shown
[0052] (4) Put the encapsulated quartz tube into the muffle furnace accordin...
example 2
[0057] (1) Weigh manganese monoxide (MnO) and vanadium trioxide (V) in a molar ratio of 1:1 2 O 3 ) Raw materials, put the weighed raw materials into a glove box replaced with high-purity argon three times, and grind them for 60 minutes;
[0058] (2) Weigh 2 g of the ground powder, put the weighed powder into a mold with a diameter of 10 mm, press it into a shape at a pressure of 50 MPa, and hold the pressure for 1 min;
[0059] (3) Put the pressed cylinder into a quartz tube that has been cleaned beforehand (the quality of the discharged material must be strictly controlled below 2g to prevent the quartz tube from occurring at high temperatures due to the volatilization of the raw materials during the pre-sintering process Explosion), and then use a vacuum pump to extract the air in the quartz tube. The entire vacuuming process is not less than 15 minutes. The actual package is as attached figure 2 Shown
[0060] (4) Put the encapsulated quartz tube into the muffle furnace accordin...
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