Synthesis of natural superlattice structure in the binary ZnO–Fe2O3 system by microwave irradiation

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概要

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• Homologous compounds, Fe2O3(ZnO)m, with the modulated natural superlattice structure were obtained within a short period by solid state reaction of component oxides under 2.45 GHz microwave irradiation. TEM observation revealed that two types of superlattice structures were observed in different Fe concentration; one is longitudinal superlattice structure in a rod shaped precipitation at high Fe concentration, and the other is modulated structure showing zigzag shape at low Fe concentration. It is conclude that the non-equilibrium nature of microwave selective heating, as well as rapid heating and quenching effects, plays a key role to form the superstructure. The obtained products exhibit ferromagnetic behavior with the Curie temperature above 300 K.

• 公益社団法人 日本セラミックス協会の論文

著者

• Hayashi Yamato

  Department Of Applied Chemistry Graduate School Of Engineering Tohoku University

• Takizawa Hirotsugu

  Department Of Applied Chemistry Graduate School Of Engineering Tohoku University

• MIYAZAKI Takamichi

  Department of Instrumental Analysis, Technical Division, School of Engineering, Tohoku University

• KATAYOSE Satomi

  Department of Applied Chemistry, Graduate School of Engineering, Tohoku University

• MIYAZAKI Takamichi

  Department of Instrumental Analysis, Graduate School of Engineering, Tohoku University

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