“…36 As regards Nd 3+ -doped GdPO 4 nano-particles, it was discovered that they exhibit cytotoxicity, for example, towards prostate cancer cells. 37 Moreover, by combining the optical properties of the Nd 3+ ion and the paramagnetic properties of the Gd 3+ ion, lumino-magnetic phosphors with dual properties may be obtained. 38 Nd 3+ -doped GdPO 4 seems to be an interesting material for various applications, including biological ones but some spectroscopic phenomena still remain un-explained.…”