METHOD FOR MANUFACTURING A COMPOSITE BARIUM TITANATE - BARIUM FERRITE IN ALUMINUM-CONTAINING CRUCIBLES Russian patent published in 2021 - IPC C04B35/468 C04B35/26 

FIELD: composite barium titanate production.

SUBSTANCE: method of manufacturing a composite barium titanate - barium ferrite refers to the production of ferroelectric materials or multiferroics. To implement the proposed method, separate grinding of barium titanate and barium ferrite to a fineness of 10 microns is performed. The obtained powders of barium titanate and barium ferrite are mixed in a 4:1 ratio and mixed until homogeneous. To the resulting mixture is added 5 wt.% of a five percent by weight aqueous solution of polyvinyl alcohol as a plasticizer and stirring is carried out until homogeneous. The resulting mixture is cold formed with a pressure of 600 MPa. The composite is synthesized at 1248-1250°C for 2-6 hours, followed by smooth cooling of the resulting composite for 8-20 hours.

EFFECT: creation of a composite multiferroic with the required magnetoelectric properties at a minimum sintering temperature.

1 cl, 1 dwg