Effects of Different Dopants on the Growth and Phase Transition of Ba3Y(BO3)(3) Crystal

Phase transition is harmful to the quality of Re doped Ba3Y(BO3)3 crystals.In order to obtain high quality Yb3+∶α-Ba3Y(BO3)3 crystal,Sr2+ ions co-doped Yb3+∶α-Ba3Y(BO3)3 crystal was grown with CZ method.Effect of various dopants and substitution sites on the growth and phase transition of Ba3Y(BO3)3 crystal were investigated.The phase transition temperature of 10at% Nd3+∶α-Ba3Y(BO3)3 crystal is 1099.6℃,which is lower than that of 10at% Yb3+∶α-Ba3Y(BO3)3 crystal(1145.3℃).Furthermore,the phase transition temperature of Nd3+∶α-Ba3Y(BO3)3 crystals is increased with the increase of the contentration of Nd3+ ions.For 10at%Yb3+∶α-Ba3Y(BO3)3 crystal,the melting point is increased and the phase transition temperature is decreased with the increase of the concentration of the co-doped Sr2+ ions.The endothermic peak of phase transition disappears when the concentration of Sr2+ ions reaches 16at%,yet phase transition still exists with Sr2+ concentration of 5at% or 10at%.