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Stoichiometric LiBC has been synthesized using both arc melting and sealed tantalum ampoule methods. Hole-doped Li1−xBC (0<x⩽0.37) compounds have been realized through vacuum deintercalation from LiBC. The hexagonal crystal lattice has remained largely intact, with only slight decreases in lattice parameters upon hole-doping. The samples are intrinsically diamagnetic and are semiconducting in the 2–300 K range studied. Increased hole-doping leads to a color darkening as well as a decrease in resistivity.
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Zhao et al. (2003) studied this question.
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