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. 2024 Apr 20;9(4):252. doi: 10.3390/biomimetics9040252

Figure 4.

Figure 4

FT-IR spectra of Ca9.5–xSrxCu(PO4)7 with 0 ≤ x ≤ 2 (a) and 2 ≤ x ≤ 4.5 (b).