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. 2020 Jan 2;10(1):85. doi: 10.3390/nano10010085

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© 2020 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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ZFC-FC curves collected in 80 Oe (0.008 T magnetic field induction) DC applied field (a) and hysteresis loops (b) for sample NV7, similar ZFC-FC curve (c) and hysteresis loops (d) for sample NV7-TT.