Low-Temperature Cationic Rearrangement in a Bulk Metal Oxide

Man Rong Li, Maria Retuerto, Peter W. Stephens, Mark Croft, Denis Sheptyakov, Vladimir Pomjakushin, Zheng Deng, Hirofumi Akamatsu, Venkatraman Gopalan, Javier Sánchez-Benítez, Felix O. Saouma, Joon I. Jang, David Walker, Martha Greenblatt

研究成果: Contribution to journalArticle

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Cationic rearrangement is a compelling strategy for producing desirable physical properties by atomic-scale manipulation. However, activating ionic diffusion typically requires high temperature, and in some cases also high pressure in bulk oxide materials. Herein, we present the cationic rearrangement in bulk Mn2FeMoO6at unparalleled low temperatures of 150–300oC. The irreversible ionic motion at ambient pressure, as evidenced by real-time powder synchrotron X-ray and neutron diffraction, and second harmonic generation, leads to a transition from a Ni3TeO6–type to an ordered-ilmenite structure, and dramatic changes of the electrical and magnetic properties. This work demonstrates a remarkable cationic rearrangement, with corresponding large changes in the physical properties in a bulk oxide at unprecedented low temperatures.

ジャーナルAngewandte Chemie - International Edition
出版物ステータス出版済み - 1 1 2016

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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    Li, M. R., Retuerto, M., Stephens, P. W., Croft, M., Sheptyakov, D., Pomjakushin, V., Deng, Z., Akamatsu, H., Gopalan, V., Sánchez-Benítez, J., Saouma, F. O., Jang, J. I., Walker, D., & Greenblatt, M. (2016). Low-Temperature Cationic Rearrangement in a Bulk Metal Oxide. Angewandte Chemie - International Edition, 55(34), 9862-9867. https://doi.org/10.1002/anie.201511360