稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2004年
1期
104-107
,共4页
李静%王继扬%程绣凤%张怀金
李靜%王繼颺%程繡鳳%張懷金
리정%왕계양%정수봉%장부금
inorganic materials%borates%optic properties%thermal expansion%rare earths
Single crystal of dysprosium-doped yttrium aluminum tetraborate Dy:YAl3(BO3)4(Dy:YAB) was grown by the flux method. The room-temperature absorption spectrum and low-temperature fluorescence spectrum of Dy3+:YAl3(BO3)4 crystal were measured. The yellow emission transitions(4F9/2→6H13/2)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.
