Study on Europium-Doped Hydroxyapatite Nanoparticles by Fourier Transform Infrared Spectroscopy and Their Antimicrobial Properties

Figure 2

Second derivative of Eu:HAp (𝑥_Eu=0, 𝑥_Eu=0.02, and 𝑥_Eu=0.2) spectrum of the 𝜈₄, 𝜈₃, 𝜈₂, and 𝜈₁ domains.