Co-precipitation synthesis and photoluminescence properties of K2GdZr (PO4)3:Eu3+-a deep red luminomagnetic nanophosphor

► Eu3+ doped K2GdZr(PO4)3 nanocrystals have been synthesized successfully by coprecipitation. ► K2GdZr(PO4)3:Eu3+ emit intense deep red fluorescence. ► Red emitting K2GdZr(PO4)3:Eu3+ nanocrystals show superparamagnetism due to Gd3+. ► Luminomagnetic KGP:Eu3+ have application potential in biology, lighting and display.