Gd³⁺-Doped Magnetic Nanoparticles for Biomedical Applications

Figure 4

(a) FTIR spectra of synthesized samples: (1) MNP-Gd0%; (2) MNP-Gd0.5%; (3) MNP-Gd0.6%; (4) MNP-Gd2.5%; (5) MNPGd4.3%; (6) MNP-Gd5.1%. (b) An enlargement of the 500–750 cm⁻¹ spectral interval reporting the absorption band centered at ∼600 cm⁻¹ of normalized intensity together with fitting results for the MNP-Gd0% sample. (c) An enlargement of 300–500 cm⁻¹ spectral interval reporting the absorption band centered at ∼400 cm⁻¹ for MNP-Gd0% and MNP-Gd5.1% samples with fitting results.

(a)

(b)

(c)