PARTICLES SIZE AND LATTICE STRAIN EFFECT ON THE OPTICAL CONSTANTS OF Fe3O4 NANOPARTICLES

In the case of optical sensors such as Surface Plasmon Resonance (SPR) sensor, Fe3O4 nanoparticles play a role to boost signal however they can increase detection sensitivity biosensor. For this application, properties need be studied. The are described in terms their constants. Therefore, work was purposed study effect particle size and lattice strain on constants nanoparticles. Samples were synthesized by using coprecipitation technique. Two calcination temperatures, i.e., 150oC 250oC for 4 hours applied samples. characterized diffraction pattern XRD Specular UV-Vis Spectroscopy technique, consecutively. estimated Williamson-Hall (W-H) method. reflectance curve SPR sensor application also performed toward simulation Winspall 3.02 software. results show that temperature causes an decrease strain. constants, absorbance (A), absorption coefficient (α), extinction (k), refractive index (n), dielectric (ε), conductivity (σ), Urbach energy (Eu) significantly depended particles However, constant influent angle