摘要
用晶体场理论研究了方镁石中Cr^(3+)离子的零场劈裂D随单轴压力的变化,发现杂质离子附近的局部压缩率的确不同于基质晶体的压缩率,即由于Cr^(3+)离子附近有阳离子空位出现,空位附近的氧离子将更易于向空位压缩,造成局部压缩率不同于基质晶体压缩率。
From the crystal-field theory and the experimental results of uniaxial stress dependence of zero-field splitting D in MgO:Cr^(8+) crystals it can be seen that the local compressibility is indeed different from the host one, i.e., the ligands in the vicinity of the vacancy should be more easily compressed toward the vacancy, which makes the local compressibility differ from the host one.
出处
《矿物学报》
CAS
CSCD
北大核心
1989年第2期165-168,共4页
Acta Mineralogica Sinica
关键词
方镁石
离子
空位
压缩率
periclase
EPR spectrum
local compressibility
