Charge Transfer and Bond Lengths in YBa2Cu(3-x)M(x)O(6+y)

摘要

We discuss the effects of doping on the Cu chain sites in YBa(sub 2)Cu(sub 3-x)M(sub x)O(sub 6+y). The relationship between bond lengths obtained from neutron scattering and charge transfer is evaluated in terms of bond valence. In particular, it is concluded that removing an oxygen from the chains transfers one electron to the planes. 24 refs., 3 figs.