Abstract
Hexaferrite doped barium powder metal Mn and Ni was synthesized using coprecipitation method. Dopant concentration values varied from x = 0; 0.2; 0.4; 0.6; 0.8 and 1.0, and calcined at temperatures of 400, 600 and 800 °C. Hexaferrite barium powder synthesized by doping Mn and Ni metal to produce a brown color. The higher the concentration and temperature of calcination given color from dark brown powder further. It has formed barium hexaferrite phase with hexagonal crystal structure is shown from testing using XRD. The crystal structure of the powder measuring nanoparticles using TEM test results. Barium powder hexaferrite by doping Mn and Ni metal belonging to the semiconductor material produced from the test LCR meter. The Barium hexaferrite this falls in soft magnetic seen from the value of coercivity magnetic metal doped Mn and Ni is smaller when compared with barium hexaferrite without doping obtained from measurements using the VSM. All of the measurements indicate powder doped barium hexaferriteMn and Ni metal potential as an absorber of microwaves.