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. 2021 Sep 19;11(9):2442. doi: 10.3390/nano11092442

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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 images of Ca_10−xTb_x(PO₄)₆(OH)₂ (a) x = 0.05; (b) x = 0.1; (c) x = 0.25; (d) x = 0.5; (e) x = 1.

SEM images of Ca_10−xTb_x(PO₄)₆(OH)₂ (a) x = 0.05; (b) x = 0.1; (c) x = 0.25; (d) x = 0.5; (e) x = 1.