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The initial NiCuZn synthetic ferrite were acquired from thermally decomposing the metal nitrates Fe(NO3)39H2O, Zn(NO3)26H2O, Ni(NO3)26H2O, and Cu(NO3)23H2O at 150oC for 24 hours, and then we calcined the synthetic powder at 500oC, pulverized each of those for 3, 6, 9, 12, and 15 hours in a steel ball mill, sintered each at 700oC to 1,000oC for 1 hour, and thus studied their microstructures and electromagnetic properties. We could make the initial specimens chemically bonded in liquidity at a low-temperature 150oC, by using the low melting points less than 200oC of the metal nitrates instead of the mechanical ball-mill pulverization, then narrow a distance between the particles into a molecular one, and thus lower the reaction point of sintering by at least 200oC to 300oC. Their initial permeability was 50 to 400 and their maximum magnetic induction density and coercive force, 2,400 G and 0.3 Oe to 0.5 Oe respectively, which was similar to those of NiZnCu ferrite synthesized in the conventional process. In the graph of initial permeability by frequencies, a 180o rotation of the magnetic domain, which appears in a broad band of micro-wave before and after the resonance frequency, could be perceived.