Mn doped CeO2 nanoparticles with cubic fluorite structure were synthesized.
Mn dopant significantly tailored the band gap of CeO2 nanoparticles.
The synthesized nanoparticles exhibited room temperature ferromagnetic behavior.
The cytotoxicity of these nanoparticles was reported for the first time.
The synthesized nanoparticles exhibited differential cytotoxicity.