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钨酸铅晶体的红外反射谱
作者:孙桂芳 钱霞 盛淑芳 阮树仁  
单位:聊城大学物理科学与信息工程学院  
关键词:钨酸铅晶体  红外反射谱  介电常数  光学声子频率 
分类号:TB32
出版年,卷(期):页码:2009,37(2):231-233
DOI:
摘要:

采用提拉法生长了钨酸铅(PbWO4,PWO)晶体。室温下测量了PWO晶体的红外反射谱,观察到7个反射峰,分别位于84,125,260,298,381,785cm-1和854cm-1,对各个反射峰进行了振动归属;利用Kramers-Kronig(K-K)关系对样品的红外反射谱进行数据处理,获得晶体的静态介电常数ε0=5.25,高频介电常数ε∞=4.30,横光学声子频率ωT=769.92cm-1和纵光学声子频率ωL=881.19cm-1等物理参量。

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Lead tungstate(PbWO4,PWO) crystal was grown by the Czochralski method.The infrared reflection spectra of the PWO crystal were measured at room temperature.The measurement results show that the infrared reflection spectra of the PWO crystal have seven reflection peaks,which are located the positions at 84,125,260,298,381,785 and 854 cm-1.The assignments of the vi-brations were determined.Using the Kramers-Kronig(K-K) relation,the data of infrared reflection spectra were processed.The PWO crystal has a static dielectric constant ε0 of 5.25,an infrared dielectric constant ε∞ of 4.30,a transverse optical phonon frequency ωT of 769.92 cm-1,and a longitudinal optical phonon frequency ωL of 881.19 cm-1.

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基金项目:
聊城大学科研基金资助项目
作者简介:
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参考文献:

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