Abstract

Ternary compounds (Pr,Nd,Sm)Mn6Sn6 have been synthesized by argon arc melting starting from the pure elements. All compounds were found to be isotypic with HoFe6Sn6 (space group Immm-D2h25, no. 71; Z=6). The HoFe6Sn6 type is a stacking variant composed of slabs of the HfFe6Ge6 type and of the ScFe6Ga6 type. The compounds order ferrimagnetically slightly above room temperature exhibiting a strong magnetocrystalline anisotropy. The 119Sn Mössbauer spectra at 15 and 293 K were fitted with five magnetic sextets, with hyperfine fields ranging from 12 to 32 T at 15 K.

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