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Synthesis, Crystal Structure, and Properties of HfM′P (M′ = Fe, Co, Ni) in comparison to ZrNiP
Author(s) -
Kleinke H.,
Franzen H. F.
Publication year - 1996
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19966221114
Subject(s) - orthorhombic crystal system , crystal structure , crystallography , lattice constant , metal , materials science , structure type , arc melting , annealing (glass) , chemistry , metallurgy , diffraction , microstructure , physics , optics
The new phosphides HfM′P (M′ = Fe, Co, Ni) have been synthesized by arc melting of HfP and the corresponding 3 d metal, and subsequent annealing at 1400°C. The lattice constants vary from a = 6.247(2) Å, b = 3.7177(6) Å, c = 7.137(2) Å, V = 165.74(8) Å 3 for HfFeP, a = 6.295(3) Å, b = 3.668(2) Å, c = 7.175(4) Å, V = 165.7(2) Å 3 for HfCoP to a = 6.240(3) Å, b = 3.716(2) Å, c = 7.135(2) Å, V = 165.4(2) Å 3 (HfNiP) in the orthorhombic space group Pnma. Although ZrNiP occurs only in the Ni 2 In structure type, all three Hf phosphides crystallize in the Co 2 Si structure type, isotypic to ZrFeP and ZrCoP. The structural differences between HfNiP and ZrNiP can be explained by the preference of Hf for structures with more metal‐metal bonds rather than by size effects.