Thermal expansion behavior and high-temperature transport properties of Sr3YCo4−xFexO10.5+y, x=0.0, 1.0, 2.0 and 3.0

Istomin, S.Ya.; Drozhzhin, Oleg A.; Napolsky, Ph S.; Putilin, S.N.; Gippius, A. A.; Антипов, Е. М.

doi:10.1016/j.ssi.2008.01.017

Cited by 14 publications

(3 citation statements)

References 11 publications

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“…As can be seen, the Arrhenius plot does not produce a straight line in the whole temperature range, indicating a variation of the conduction mechanism with temperature. Similar nonlinear behavior of conductivity has also been reported by Istomin, et al 20 and was attributed to the gradual change of oxygen concentration rather than of O4 disorder with increasing temperature. As shown by the solid line in Figure 8b, linear fitting to the Arrhenius plot below 200 K yields an activation energy of ∼128 meV.…”

Section: Electrical Conductivity Andsupporting

confidence: 87%

Oxygen-Deficient Perovskite Sr_0.7Y_0.3CoO_2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

Kim

Cheng

et al. 2011

Chem. Mater.

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The oxygen-deficient perovskite Sr 0.7 Y 0.3 CoO 2.65Àδ contains Co2O 6/2 (001) planes alternating with oxygen-deficient Co1O 1.15-δ planes having 0.15Àδ O4 oxygen in the plane capping tetrahedral site Co1. With ordering of the O4 atoms below 300 °C, the oxide exhibits n-type polaronic conduction associated with localized highspin 3d electronic configurations on Co 2+ in Co1 sites; a transition to itinerant-hole conduction occurs on disordering of O4 ions over the range 350 < T < 600 °C. Above 600 °C, Sr 0.7 Y 0.3 CoO 2.65Àδ is a mixed oxide-ion/electronic conductor exhibiting good activity for the oxygen-reduction reaction, which makes it a competitive cathode material for an intermediate-temperature solid oxide fuel cell.

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Section: Electrical Conductivity Andsupporting

confidence: 87%

Oxygen-Deficient Perovskite Sr_0.7Y_0.3CoO_2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

Kim

Cheng

et al. 2011

Chem. Mater.

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“…In modern solid-state chemistry, success is observed and associated with obtaining complex oxides showing unique physical and chemical properties [1][2][3][4]; the effects of colossal magnetoresistance [5][6][7][8], nonlinear optics [9][10][11], transport properties [12][13][14][15], spin ordering, etc. are among them.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Dilution as a Direct Method for Detecting and Evaluation of Exchange Interactions between Rare Earth Elements in Oxide Systems

Чежина

Fedorova

2023

Magnetochemistry

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This work is devoted to the study of exchange interactions between rare earth atoms in the LaAlO3 matrix. Using the magnetic dilution method, the study of concentration and temperature dependences of magnetic susceptibility and effective magnetic moments of diluted solid solutions the magnetic characteristics of single rare earth atoms and the character of superexchange between them are described—antiferromagnetic at low concentrations, and for samarium, predominantly ferromagnetic within greater clusters as the concentration increases. The development of superexchange is similar to the exchange between d-elements in the same matrix.

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“…Recently, the new cobalt-based oxide Sr 3 YCo 4 O 10.5+δ with perovskite structure has been investigated [7,8,9,10,11]. Sr 3 YCo 4 O 10.5+δ is composed of octahedral CoO 6 and the oxygen-deficient CoO 4+δ layers alternately stacking along c-axis [12,13].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cu Doping on the Microstructure and Electrical Properties of Sr3YCo4O10.5+δ Polycrystalline

Zhang

et al. 2014

AMR

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Polycrystalline samples of Sr3YCo4-xCuxO10.5+δ (x=0, 0.2, 0.4, 0.6) have been prepared by solid state reaction method. Crystal structure has been checked by X-ray diffraction (XRD) and the results indicate that Sr3YCo4-xCuxO10.5+δ (x=0, 0.2, 0.4) with single phase have been synthesized in air, and the lattice parameters of Sr3YCo4-xCuxO10.5+δ (x=0, 0.2, 0.4) increase with increasing Cu content. Microstructure analysis demonstrates that the grain sizes enlarge and the number of pores decreases with increasing Cu content. The change of porous structure with different Cu contents is discussed by the liquid sintering theory. The temperature dependence of resistivity (ρ-T) curves of Sr3YCo4-xCuxO10.5+δ show nonmetallic behavior. And the electrical resistivity decreases successively with increasing Cu content, which is caused by the porous structure scattering the carriers as well as the increase of hole carriers.

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Thermal expansion behavior and high-temperature transport properties of Sr3YCo4−xFexO10.5+y, x=0.0, 1.0, 2.0 and 3.0

Cited by 14 publications

References 11 publications

Oxygen-Deficient Perovskite Sr_0.7Y_0.3CoO_2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

Oxygen-Deficient Perovskite Sr_0.7Y_0.3CoO_2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

Magnetic Dilution as a Direct Method for Detecting and Evaluation of Exchange Interactions between Rare Earth Elements in Oxide Systems

Effects of Cu Doping on the Microstructure and Electrical Properties of Sr<sub>3</sub>YCo<sub>4</sub>O<sub>10.5</sub><sub>+δ</sub> Polycrystalline

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Thermal expansion behavior and high-temperature transport properties of Sr3YCo4−xFexO10.5+y, x=0.0, 1.0, 2.0 and 3.0

Cited by 14 publications

References 11 publications

Oxygen-Deficient Perovskite Sr0.7Y0.3CoO2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

Oxygen-Deficient Perovskite Sr0.7Y0.3CoO2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

Magnetic Dilution as a Direct Method for Detecting and Evaluation of Exchange Interactions between Rare Earth Elements in Oxide Systems

Effects of Cu Doping on the Microstructure and Electrical Properties of Sr<sub>3</sub>YCo<sub>4</sub>O<sub>10.5</sub><sub>+δ</sub> Polycrystalline

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Oxygen-Deficient Perovskite Sr_0.7Y_0.3CoO_2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

Oxygen-Deficient Perovskite Sr_0.7Y_0.3CoO_2.65−δ as a Cathode for Intermediate-Temperature Solid Oxide Fuel Cells