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. 2022 Jul 22;12(15):2523. doi: 10.3390/nano12152523

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© 2022 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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The dependence of saturation magnetisation of Co, Co/CoO/Co₃O₄ and Co₃O₄ nanoparticles on the magnetic field strength (a) and dependence of saturation magnetisation on the Co content in nanoparticles (b).