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On the insertion of carbon atoms in B12 icosahedra and the structural anisotropy of β-rhombohedral boron and boron carbide

✍ Scribed by Werheit, Helmut; Kuhlmann, Udo; Lundström, Torsten


Book ID
120301371
Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
925 KB
Volume
204
Category
Article
ISSN
0925-8388

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From many experimental studies, a localized intrinsic acceptor level is assumed to exist at about 0.2 eV above the valence band edge in -rhombohedral boron. The acceptor level has been tentatively originated from the unoccupied intracluster bonding level split away from the valence band due to the d