摘要
Single crystal of dysprosium-doped yttrium aluminum tetraborate Dy:YAl 3(BO 3) 4(Dy:YAB) was grown by the flux method. The room-temperature absorption spectrum and low-temperature fluorescence spectrum of Dy 3+:YAl 3(BO 3) 4 crystal were measured. The yellow emission transitions ( 4F 9/2→ 6H 13/2)at 575 nm is more intense than other transitions. The specific heat and thermal expansion were measured. The specific heat is 0.93 J·g -1·℃ -1 at room temperature. The maximum of the thermal expansion occurs in the direction parallel to the c-axis and the minimum occurs in the direction parallel to the a-axis. The thermal expansion coefficient along c-axis is almost 6.5 times larger than that along a-axis.
Single crystal of dysprosium-doped yttrium aluminum tetraborate Dy:YAl 3(BO 3) 4(Dy:YAB) was grown by the flux method. The room-temperature absorption spectrum and low-temperature fluorescence spectrum of Dy 3+:YAl 3(BO 3) 4 crystal were measured. The yellow emission transitions ( 4F 9/2→ 6H 13/2)at 575 nm is more intense than other transitions. The specific heat and thermal expansion were measured. The specific heat is 0.93 J·g -1·℃ -1 at room temperature. The maximum of the thermal expansion occurs in the direction parallel to the c-axis and the minimum occurs in the direction parallel to the a-axis. The thermal expansion coefficient along c-axis is almost 6.5 times larger than that along a-axis.
基金
ProjectsupportedbytheHighTechnologyDevelopmentProjectofChina ( 2 0 0 2AA3 110 3 0 )
