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Spinodally decomposed nanostructures in a TiO2–VO2 crystal (2015)

Z. Hiroi, T. Yoshida, J. Yamaura and Y. Okamoto

American Institute of Physics (AIP)

In: APL Materials

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Publication Date: 2015-05-07

Description: We have prepared a single crystal of Ti 0.4 V 0.6 O 2 which forms a solid solution crystallizing in the rutile structure at high temperatures and undergoes phase separation due to the spinodal decomposition when cooled to room temperature. The spinodally decomposed crystal consists of a self-assembled, mega stack of alternate Ti- and V-rich layers with an approximate period of 33 nm along the c axis. The unidirectional microstructure causes a large anisotropy in resistivity and a small one in thermal conductivity. A sharp metal–insulator transition as well as a structural transition to a monoclinic structure is observed in the thin V-rich layers.

Electronic ISSN: 2166-532X

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Published by American Institute of Physics (AIP)

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