“…The first mixed vanadate crystal (Nd:Gd 0.5 La 0.5 VO 4 ) was grown and investigated in 1996 [1]. Afterwards, several other mixed vanadate crystals, such as Nd:Gd 0.8 La 0.2 VO 4 [2,3], Y 1−x La x VO 4 [4], Nd:Gd x Y 1−x VO 4 [5,6], or Nd:Lu x Gd 1−x VO 4 [7], were studied. For all crystals, the luminescence bands were found to be broader than those of Nd:YVO 4 or Nd:GdVO 4 [8].…”