Electrical conductivity of yttrium-doped SrTiO3: influence of transition metal additives

The electrical conductivity of yttrium-doped SrTiO3 with transition metals added as acceptor dopants (V, Mn, Fe, Co, Ni, Cu, Zn, Mo, Mg, Zr, Al, or Ga) was measured by the dc four-probe method at 600–900°C in reducing atmospheres. The replacement of 5mol% titanium by acceptors leads to a decrease of conductivity of Sr1−1.5xYxTiO3−δ. The degree of the decrease depends strongly on the type of dopant. Of the 5mol% acceptor-doped compositions, the …