Production of barium lead hexaferrite single crystals from the flux

The results of the research of the hexaferrite single crystal growth from the PbO barium lead flux by spontaneous crystallization are presented. For the growth experiments the resistive furnace with the PID temperature controller was used. Single crystals of the Ba1-xPbxFe12O19 composition at х = 0.2; 0.45; 0.8 have typical hexa¬gonal shape and sizes up to 3 mm. The grown crystals were tested with the scanning electron microscopy. An X-ray analysis of the samples was done and cell parameters were calculated. The differential scanning calorimeter was used to obtain the temperature of the phase transformation. The influence of the Pb substitution on the structure and properties was detected. For the Ba0,2Pb0,8Fe12O19 composition cell parameters are a = 5.8917(12) Å, c = 23.173(3) Å, V = 696.60(19) Å3. The influence of lead substitution on the barium ferrite properties is not high. According to these results the presented method can be used for the growth of partially substituted single crystalline materials based on Ba1-xPbxFe12-yMeyO19.