TY - JOUR

T1 - Doping of calcium titanate with chromium and indium

AU - Murashkina, A. A.

AU - Demina, A. N.

PY - 2005/4

Y1 - 2005/4

N2 - The lattice parameters and composition range of orthorhombic CaTi 1 - x Cr xO 3 - δ solid solutions were determined by x-ray powder diffraction. Samples with the nominal compositions CaTi 1 - y In yO 3 - δ, synthesized in the range y=0.05-0.3, consisted of two phases: CaTiO 3 - δ and a CaIn 2O 4-based phase. The compositions of the synthesized phases were checked by x-ray microanalysis. The electrical conductivity of the CaTi 1 - x Cr xO 3 - δ (0 < × ≤ 0.2)solid solutions was measured as a function of oxygen partial pressure (0.21 × 10 4 to 1.0 × 10 -11 Pa) at 900 and 1000°C. Cr doping of calcium titanate was shown to increase its conductivity. A mechanism of defect formation in doped calcium titanate was inferred from conductivity versus p o2 data.

AB - The lattice parameters and composition range of orthorhombic CaTi 1 - x Cr xO 3 - δ solid solutions were determined by x-ray powder diffraction. Samples with the nominal compositions CaTi 1 - y In yO 3 - δ, synthesized in the range y=0.05-0.3, consisted of two phases: CaTiO 3 - δ and a CaIn 2O 4-based phase. The compositions of the synthesized phases were checked by x-ray microanalysis. The electrical conductivity of the CaTi 1 - x Cr xO 3 - δ (0 < × ≤ 0.2)solid solutions was measured as a function of oxygen partial pressure (0.21 × 10 4 to 1.0 × 10 -11 Pa) at 900 and 1000°C. Cr doping of calcium titanate was shown to increase its conductivity. A mechanism of defect formation in doped calcium titanate was inferred from conductivity versus p o2 data.

UR - http://www.scopus.com/inward/record.url?scp=18144378848&partnerID=8YFLogxK

U2 - 10.1007/s10789-005-0143-8

DO - 10.1007/s10789-005-0143-8

M3 - Article

AN - SCOPUS:18144378848

VL - 41

SP - 402

EP - 405

JO - Inorganic Materials

JF - Inorganic Materials

SN - 0020-1685

IS - 4

ER -