论文部分内容阅读
本文研究了电子光谱中用于识别Fe~(2+)-Fe~(3+)和Fe~(2+)-Ti~(4+)化合价间电荷转换吸收谱带的标准,并比较了未扰动的Fe~(2+)晶体场谱带和Fe~(3+)相互作用被强化谱带的特征.研究表明,谱带能量对谱带特征影响最小;谱带强度随温度的变化也具有限制意义;谱带宽度是电荷转换谱带最可靠的特征.蓝柱石象绿铁矿、硅铁灰石和天蓝石的80K光谱一样也具有新的光学吸收光谱.关于绿铁矿和硅铁灰石的光学光谱与磁化率测量的比较,为认识电荷转换强度随温度变化上的磁性偶合作用的新理论提供了支持.
In this paper, the criteria for the identification of charge-transfer absorption bands in valences of Fe ~ (2 +) - Fe ~ (3+) and Fe ~ (2 +) - Ti ~ (4+) The interaction between the disturbed Fe 2+ crystals and the Fe 3+ interaction has been characterized by the intensification of the bands.The results show that the energy of the band has the least effect on the band characteristics and the change of the band intensity with the change of temperature Limiting significance; band width is the most reliable feature of the charge-transfer band, and blue-sky stones have new optical absorption spectra just like the 80K spectrum of green-iron, ferrosilicon, and pyrochlore. The comparison of the optical spectra with the susceptibility measurements provides support for the new theory to understand the magnetic coupling of charge transfer intensity with temperature changes.