ANALYSIS ON CRYSTAL FIELD PARAMETER OF RARE EARTH IONS IN RX COMPOUNDS
稀土化合物RX的晶场参数分析

The experimental data of CFP B40 of rare earth ions in RX compounds is analyzed. On this basis, we propose a new relation, through which the CPP B40 values in RX compounds can be calculated by the simple point charge model, namely, B40=k3(B40)p + c3 The CFP B40 values in a lot of RX compouuds were determinded by this relation. Results are in good agreement with experimental values. Finally, the meaning of the relation are discussed.