HoP-type structure

The magnetic hyperfine spectra of Dy mono-pnictides are also curious. For example, DyAs and DyP are considered ferrimagnets with a HoP-type structure and moments considerably below the free-ion value. In contrast, the Mossbauer spectra exhibit a single hyperfine pattern only with a saturation field rather close to the free-ion value. This point also urgently needs clarification in the future. 

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