Covalency Parameters in MnO, α-MnS, and NiO

Abstract

The intensities of low-angle neutron-diffraction peaks have been measured for the antiferromagnetic solids MnO, α-MnS, and NiO. From the reduced intensities of the (111) magnetic peaks the following covalency parameters have been derived: Aσ2 + 2Aπ2 + As2 = 3.5% (MnO); 7.6% (α-MnS); Aσ2 + As2 = 3.8% (NiO).