The present paper reports the nuclear hyperfine properties of KNd3F10 with the help of crystal field theory after finding the crystal field parameters which are essential for the aforesaid properties . The observed g-values of the sample were well explained with this theory with the comparison with some other samples. The nuclear hyperfine levels of 143Nd has been determined . The hyperfine specific heat for KNd3F10 has shown an inverse T2 (where T represents temperature) rule in millikelvin temperature range.

Keywords : Crystal Field Effect, G-Values, Hyperfine Interaction, Hyperfine Specific Heat.