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Thorium Transition Metals Ternary Germanides

M. Sikirica ; Institute »Ruder Boskovic «, Zagreb, Croatia, Yugoslavia
Z. Ban ; Institute »Ruder Boskovic «, Zagreb, Croatia, Yugoslavia

Puni tekst: engleski pdf 6.423 Kb

str. 151-158

preuzimanja: 77



New ternary germanides of the general compo sition ThM2Ge2
were found to exist in the systems Th-Cr-Ge, Th-Mn-Ge, Th-Fe -Ge,
Th-Co- Ge, Th-Ni- Ge and Th- Cu-Ge. The crystal structure analysis
by means of the x - ray powder diffraction method showed that
these compounds are isostructural with the compounds ThM2Si2
(M = Cr, Mn, Fe, Co, Ni and Cu), discdvered in this labo.ratory,,
The tetragonal unit cell contains two formula units. Space group
is !4/mmm. The atomic positions of thorium and the transition
metal are defined by special position 2(a) and 4(d), respectively,
while the variabl e 2arameter z determining the position 4(e) of
the germanium atoms was obtained by computing the ele ctroi;i.
density distribution along the c-axis.

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