Interplay of 3d and 4f Magnetism in Chiral Y 6 FeSi 2 S 14 and Tb 6 FeSi 2 S 14 Chalcogenides
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Gamage, Eranga H. [Department of Chemistry; Iowa S↗
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Materials Data on Tb(FeSi)2 by Materials Project
TbFe2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Tb3+ is bonded in a distorted body-centered cubic geometry to eight equivalent Si4- atoms. All Tb–Si bond lengths are 3.09 Å. Fe+2.50+ is bonded to four equivalent Si4- atoms to form a mixture of edge and corner-sharing FeSi4 tetrahedra. All Fe–Si bond lengths are 2.27 Å. Si4- is bonded in a 9-coordinate geometry to four equivalent Tb3+, four equivalent Fe+2.50+, and one Si4- atom. The Si–Si bond length is 2.58 Å.
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