Research has been conducted on the manufacture of Barium Ferrite magnets using Na2O additives. The composition of the additives used was 1%, 1.5%, 1% Calc and 1.5 Calc with a total mass of 30 grams. Sample preparation was carried out through the powder metallurgy method, with weighing and mixing stages using a ball mill for 3 hours, then the drying process using an oven and continued with the c…