正磷酸盐晶体Ba_3(PO_4)_2和Sr_3(PO_4)_2高温拉曼光谱研究  

Temperature-dependent Raman spectroscopic study on orthophosphates Ba_3 (PO_4 )_2 and Sr_3 (PO_4 )_2

作　　者：张季[1,2,3] 王迪[1] 张德明[1] 张庆礼[1] 万松明[1] 孙敦陆[1] 殷绍唐[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,合肥230031 [2]中国科学院研究生院,北京100049 [3]安徽新华学院,合肥230088

出　　处：《物理学报》2013年第9期436-440,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50932005;51102239;90922003;51172236;91122021);安徽省自然科学基金(批准号:KJ2013B106)资助的课题~~

摘　　要：测量了碱土金属正磷酸盐Ba3(PO4)2和Sr3(PO4)2常温及高温拉曼光谱,对拉曼振动模式进行指认,并分析了晶体拉曼振动光谱及晶体结构在高温下的变化.在温度升高的过程中,拉曼振动频率向低频移动且振动峰宽度展宽,晶体中的P-O平均键长随温度升高而变长,但O-P-O的键角并未发生变化.晶体在900C以下无结构相变发生.Temperature-dependent Raman spectroscopic study on orthophosphates Ba 3 （PO4）2 and Sr 3（PO4）2 were carried out up to 900 C. The change of Raman lines and crystal structure has been investigated at high-temperatures. It is found that all the Raman lines exhibit a decrease in frequency shifts and the width of the Raman lines increases with the increase in temperature. The P-O bond lengths in the crystal increase in high- temperature, but the O-P-O bond angles have less change. No phase changes have been observed under 900 C.

关 键 词：Ba3(PO4)2和Sr3(PO4)2 高温拉曼光谱 振动模式 高温结构 

分 类 号：O611.3[理学—无机化学]