Effect of oxygen clusters on optics, magnetism, and conductivity of (In2O3)0.9(SrO)0.1

Abstract We show that in In 2 O 3 –SrO ceramics with disordered structure and oxygen clusters in nanovoids, the band tails of valence and conduction bands form “negative” gap. Two types of magnetism are observed. One of them caused by formation of the “dangling bond+O 2 − ion” centers has been found in the samples saturated with oxygen. Another type is associated with the presence of dangling bonds in the oxygen-depleted samples. At T T T =5–300 K correspond to the Mott׳s law at a dependence of local activation energy on the phase state of oxygen clusters.