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. 2010 Jun 25;3(7):3794–3817. doi: 10.3390/ma3073794

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© 2010 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an Open Access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Transmission electron microscopy (TEM) images of metal oxide nano-particles synthesized by the supercritical hydrothermal flow system. (a) Y_xZr_1-xO₂, (b) K₂Ti₆O₁₃, (c) BaTiO₃, (d) Ca_0.7Sr_0.3Ti_0.9Fe_0.1O₃.