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. 2021 Oct 10;14(20):5948. doi: 10.3390/ma14205948

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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SEM analysis made in the case of Fe₃O₄ MNPs obtained through the co-precipitation method at three different magnification scales: (a) 500×; (b) 200×; (c) 5000×; and the resulting elemental analysis (d).

SEM analysis made in the case of Fe₃O₄ MNPs obtained through the co-precipitation method at three different magnification scales: (a) 500×; (b) 200×; (c) 5000×; and the resulting elemental analysis (d).