Regular Papers
Ferromagnetic Behaviors of BaTiO3 Nano-Powder
2011 年 36 巻 4 号 p. 615-618
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2011 年 36 巻 4 号 p. 615-618
BaTiO3 (BTO) nano-particles with the diameter of 15 nm were prepared by mechanical milling using planetary ball mill from the commercial BTO. Rotation speeds were selected as 0, 100, 150, 200, 250 and 300 rpm. Magnetization measurements were performed by Quantum design’s SQUID magnetometer. The 200～250 rpm samples showed the maximal saturation magnetization Ms. The 300 rpm sample showed less Ms than those of 200～250 rpm samples. The Ms of 200 rpm sample is tenth larger than the result by previous studies.
