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- Title
A Note on the AlB[sub 2] Type Structure.
- Authors
Chen, X. L.; Tu, Q. Y.; Dai, L.; Xu, Y. P.
- Abstract
In this paper, the crystal structures of a series of diborides are analyzed based on the hard ball model. We show that the packing efficiency has a close relation with the lattice parameter ratio c/a and the closest packing is achieved at c/a = 1.074. For the compounds with c/a < 1.074, the packing is loose along the basal plane and the B-B bond is under compression while with c/a > 1.074 the packing is loose along the cdirection and the B-B bond is stretched. The structures will be unstable as the c/a value deviates from 1.074. MgB[sub 2] has the largest value of c/a among the examined diborides, except for lanthanide diborides and YB[sub 2].
- Subjects
BORIDES; CHEMICAL structure; CRYSTALS
- Publication
Modern Physics Letters B, 2002, Vol 16, Issue 3, p73
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S021798490200349X