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. 2018 Nov 24;8(12):970. doi: 10.3390/nano8120970

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© 2018 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 (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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TEM micrographs of γ-Fe₂O₃ (A) γ-Fe₂O₃-6nm, (B) γ-Fe₂O₃-8nm, and (C) γ-Fe₂O₃-12nm, and Fe₃O₄ particles (D) Fe₃O₄-14nm, (E) Fe₃O₄-35nm, and (F) Fe₃O₄-350nm. Scale bar represents 50 nm except for sample LAU8, where it represents 1 μm.