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Quantitative Interpretation of Polarization SFG Vibrational Spectra of Air/Methanol Interface
Hui Wu1, Wen-kai Zhang2, Wei Gan2, Zhi-feng Cu*1, Hong-fei Wang*1,2
1.Department of Physics, Anhui Normal University, Wuhu 241000, China;2.State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
Abstract:
Magnetization of Bi0:9-xGdxLa0:1FeO3 (x=0.3, 0.5, 0.6 and 0.7) is reported. An abnormal negative magnetization appears in the temperature-dependent magnetization curves, and the temperature-dependent coercive field shows a maximum in the vicinity of the compensation temperature where the total magnetization is zero. These results suggest that in the ferrimagnetic-like Bi0:9-xGdxLa0:1FeO3 system the Gd and Fe magnetic sublattices are coupled antiferromagnetically.
Key words:  Sum frequency generation, Bond additivity model, Raman polarizability
FundProject:
空气/甲醇界面和频振动光谱的定量偏振分析
吴慧1, 张文凯2, 干为2, 崔执凤*1, 王鸿飞*1,2
1.安徽师范大学物理系,芜湖,241000;2.中国科学院化学研究所分子反应动力学国家重点实验室,北京,100080
摘要:
对空气/甲醇液体界面的和频振动光谱进行了定量的理论分析.虽然甲醇的红外和Raman光谱中都具有明显的反对称伸缩振动峰,但该光谱峰在界面和频振动光谱中却从未被观测到.利用已知的甲醇液体的红外和Raman光谱对和频振动光谱的键极化模型进行了修正,从而对此实验现象进行了定量的解释.此修正可以广泛地应用于界面和频振动光谱的研究中.
关键词:  和频振动光谱, 键极化加和模型, Raman极化率
DOI:10.1360/cjcp2006.19(3).187.3
分类号: