Transport properties of Sm1-xCaxCr1-yCuyO3 solid solutions

Anikina, E. L.; Zemtsov, V. I.; Бурмакин, Е. И.

doi:10.1007/bf02758382

Cited by 4 publications

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“…Conductivity measurements. Conductivity was measured by a four-probe technique in air and in a hydrogen atmosphere ( = 10 -12.5 Pa) [2].…”

Section: Methodsmentioning

confidence: 99%

“…A salient feature of these materials is low electrical conductivity in gaseous ambients with < 10 -6 Pa. Substituting Group I and II cations on some Ln or Cr sites, one can control the electrical [2][3][4] and optical [5] properties of these chromites. These materials are potentially attractive as electrodes for electrochemical devices operating in reducing atmospheres.…”

Section: Introductionmentioning

confidence: 99%

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Structural, optical, and electrical properties of doped samarium chromite

2005

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The structural, optical, and electrical properties of SmCrO 3 doped on the two cation sites were studied using electron probe x-ray microanalysis, ellipsometry, and conductivity measurements. The results for the Sm 0.8 Ca 0.2 Cr 0.92 Cu 0.08 O 3 solid solution demonstrate that hydrogen reduction at 1270 or 1620 K produces significant microstructural changes and leads to Ca 2+ or Cu 2+ segregation at grain boundaries. Both doping and hydrogen reduction influence the electrical and optical properties of samarium chromite.

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“…Conductivity measurements. Conductivity was measured by a four-probe technique in air and in a hydrogen atmosphere ( = 10 -12.5 Pa) [2].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural, optical, and electrical properties of doped samarium chromite

2005

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“…La 1-x Ca x CrO 3 (0.1 ≤ x ≤ 0.4) is commonly used as interconnect material for SOFCs. To find a kind of new interconnect material with superior electrical properties for SOFCs, Anikina et al [2] studied the formation and electrical conductivity of Ca 2+ and Cu 2+ doped SmCrO 3 , and Hirota et al [3] reported the formation, sintering and electrical conductivity of Mg 2+ doped SmCrO 3 , but the electrical conductivities of these materials are all low in the range of intermediate temperature. Little attention has been given to the electrical conductivity of the material in which mixed rare earth oxides (Sm 2 O 3 , Gd 2 O 3 , Eu 2 O 3 and CeO 2 ) are substituted for La 2 O 3 in La 1-x Ca x CrO 3 (0.1 ≤ x ≤ 0.4).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Electrical Properties of Interconnect Material Made by Substituting Mixed Rare Earth Oxides (Sm2O3, Gd2O3, Eu2O3 and CeO2) for La2O3 in La

Zhong

Cheng

Liu

et al. 2007

KEM

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La1-xCaxCrO3 (0.1≤ x ≤ 0.4) is usually used as interconnect material for solid oxide fuel cells (SOFCs). In this paper, composite material, the two-phase mixtures of face-centered cubic fluorite structure CayCe1-yO2-y (0 ≤ y≤ 0.2) and orthorhombic perovskite structure [Sm(Eu,Gd)]1-zCazCrO3 (0 < z < 0.3), was prepared by an auto-ignition process in which mixed rare earth oxides (Sm2O3, Gd2O3, Eu2O3 and CeO2) are substituted for La2O3 in La1-xCaxCrO3. The direct current (DC) four-probe technique measurement indicated that the electrical conductivities of specimens increased along with the increase of Ca2+ content (x), especially when x=0.3 and 0.4. The material (x=0.4, about 94% relative density) showed excellent electrical conductivities of 48 Scm-1 in air and 13 Scm-1 in H2 (purity 99.999%) at 700°C respectively, which is about 3 times as high as that of La0.7Ca0.3CrO3.

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ChemInform Abstract: Electrophysical Properties of Sm_1‐xCa_xCr_1‐yCu_yO₃ Solid Solutions.

2000

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Electrophysical Properties of Sm 1−x CaxCr 1−y CuyO 3 Solid Solutions. -Novel solid solutions with perovskite type structure based on samarium chromite, Sm 1−x CaxCr 1−y CuyO 3 (x = 0.2, 0.3; 0 ¡ y ¡ 0.2), are synthesized according to the standard ceramics technology. These solid solutions possess potential as new electrode and switching materials for high-temperature fuel cells. -(ANIKINA, E. L.; ZEMTSOV, V. I.; BURMAKIN, E. I.; Neorg. Mater. 36 (2000) 1, 74-76; Inst. vysokotemp. elektrokhim., Ural. otd. Ross.

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Transport properties of Sm1-xCaxCr1-yCuyO3 solid solutions

Cited by 4 publications

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Structural, optical, and electrical properties of doped samarium chromite

Structural, optical, and electrical properties of doped samarium chromite

Preparation and Electrical Properties of Interconnect Material Made by Substituting Mixed Rare Earth Oxides (Sm<sub>2</sub>O<sub>3</sub>, Gd<sub>2</sub>O<sub>3</sub>, Eu<sub>2</sub>O<sub>3</sub> and CeO<sub>2</sub>) for La<sub>2</sub>O<sub>3</sub> in La

ChemInform Abstract: Electrophysical Properties of Sm_1‐xCa_xCr_1‐yCu_yO₃ Solid Solutions.

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Transport properties of Sm1-xCaxCr1-yCuyO3 solid solutions

Cited by 4 publications

References 0 publications

Structural, optical, and electrical properties of doped samarium chromite

Structural, optical, and electrical properties of doped samarium chromite

Preparation and Electrical Properties of Interconnect Material Made by Substituting Mixed Rare Earth Oxides (Sm<sub>2</sub>O<sub>3</sub>, Gd<sub>2</sub>O<sub>3</sub>, Eu<sub>2</sub>O<sub>3</sub> and CeO<sub>2</sub>) for La<sub>2</sub>O<sub>3</sub> in La

ChemInform Abstract: Electrophysical Properties of Sm1‐xCaxCr1‐yCuyO3 Solid Solutions.

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ChemInform Abstract: Electrophysical Properties of Sm_1‐xCa_xCr_1‐yCu_yO₃ Solid Solutions.