Lattice contributions, Mossbauer spectroscopy

Hyperfine interactions at U nuclei in uranium dipnictides are correlated with the magnetic sequence in their antiferromagnetic states. Because of high Neel temperature, the lattice contribution in the EFG tensor is difficult to estimate. Therefore, it has not been clarified experimentally whether the nuclear quadrupole interaction is caused by the cancellation between the 5f quadrupole moments and lattice contributions or not Considering the crystal structure of the series of the uranium dipnictides, the pnictogen dependence of the lattice contribution in the EFG tensor is small. The results ofthe U Mossbauer spectroscopy imply that the electronic structure thataffects the hyperfine interactions at nuclei... 

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