Abstract

A review is given of the electronic band structures of BaPb 1- x Bi x O 3 and Ba 1- x K x BiO 3. On the basis of calculated band structures, the origin of gap formation in BaBiO 3 is discussed. Recent results of APW band calculations for cubic perovskite-type transition metal oxides are summarized. Energy band structures and densities of states are shown for SrTO 3 (where T is Ti, V, Cr, Fe), CaTO 3 (where T is V, Nb), and LaTO 3 (where T is Co, Cu). The various band parameters are quantitatively estimated.

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