Abstract
Magnetic and thermal properties of the Yb3+ ion in tetragonal sites in CaF2 have been calculated using the crystal field parameters obtained by Baker and Blake from ENDOR experiments. The effective magnetic moment of the ion is found to be smallest compared to two other salts of the ion and also its variation with temperature fastest. The relative anisotropy at room temperature is also found to be largest in the present case and ΔK is negative like that of Yb ethylsulfate. The Schottky specific heat shows a peak around 180 K, which is quite high compared to other salts of the ion. An experimental verification of the thermal variation of the magnetic moment and specific heat is suggested to confirm the crystal field proposed by Baker and Blake.
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