Perovskite-type lanthanum manganite (LaMnO3) powder was synthesized by room temperature milling of La2O3 and Mn2O3 powders using a planetary ball mill. The synthesis reaction proceeds with increase in milling time and is finished by about 180 min. The reaction process was quantitatively evaluated by measuring the percentage of free (unreacted) La2O3 in the milled samples. The product powder (LaMnO3) has large specific surface area of about 10 m2/g, which is comparable to the data obtained by the complex chemical synthesis methods. The mechanochemical process can also be applied to synthesis of manganese complex oxides with other rare earth elements such as Pr, Nd and Sm.
|ジャーナル||Journal of Alloys and Compounds|
|出版ステータス||Published - 2000 2月 2|
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