Electrical conductivity and structure of solid solutions formed in the La0.8Sr0.2MnO3-La0.95Ni0.6Fe0.4O3 system

Elena Konysheva; John T.S. Irvine; Astrid Besmehn

doi:10.1016/j.ssi.2008.01.021

Electrical conductivity and structure of solid solutions formed in the La_0.8Sr_0.2MnO₃-La_0.95Ni_0.6Fe_0.4O₃ system

Elena Konysheva, John T.S. Irvine, Astrid Besmehn

Research output: Journal Publication › Article › peer-review

13 Citations (Scopus)

Abstract

The transport properties and structure of the solid solutions formed in the (100 - x) La_0.8Sr_0.2MnO₃ (LSM)-x La_0.95Ni_0.6Fe_0.4O₃ (LNF) system were studied for the first time. The parent LSM and LNF perovskites and the solid solutions formed in the concentration ranges x < 30 and 70 ≤ x ≤ 100 exhibited a rhombohedral structure. The unit cell volume of these solid solutions decreases with increasing LNF content. Formation of a new phase with an orthorhombic symmetry was observed in the concentration range 35 ≤ x< 70. Lower transport properties of the (100 - x)LSM-xLNF, 43 ≤ x ≤ 53, compositions as compared to the parent LSM and LNF perovskites can be explained with the formation of a new phase with orthorhombic structure. The (100 - x)LSM-xLNF single phase perovskites possess metallic type of conductivity in a narrow concentration and temperature range.

Original language	English
Pages (from-to)	1432-1435
Number of pages	4
Journal	Solid State Ionics
Volume	179
Issue number	27-32
DOIs	https://doi.org/10.1016/j.ssi.2008.01.021
Publication status	Published - 30 Sept 2008
Externally published	Yes

Keywords

Electrical conductivity
Perovskites
Semiconducting-metallic transition
Solid oxide fuel cell

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ssi.2008.01.021

Cite this

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title = "Electrical conductivity and structure of solid solutions formed in the La0.8Sr0.2MnO3-La0.95Ni0.6Fe0.4O3 system",

abstract = "The transport properties and structure of the solid solutions formed in the (100 - x) La0.8Sr0.2MnO3 (LSM)-x La0.95Ni0.6Fe0.4O3 (LNF) system were studied for the first time. The parent LSM and LNF perovskites and the solid solutions formed in the concentration ranges x < 30 and 70 ≤ x ≤ 100 exhibited a rhombohedral structure. The unit cell volume of these solid solutions decreases with increasing LNF content. Formation of a new phase with an orthorhombic symmetry was observed in the concentration range 35 ≤ x< 70. Lower transport properties of the (100 - x)LSM-xLNF, 43 ≤ x ≤ 53, compositions as compared to the parent LSM and LNF perovskites can be explained with the formation of a new phase with orthorhombic structure. The (100 - x)LSM-xLNF single phase perovskites possess metallic type of conductivity in a narrow concentration and temperature range.",

keywords = "Electrical conductivity, Perovskites, Semiconducting-metallic transition, Solid oxide fuel cell",

author = "Elena Konysheva and Irvine, {John T.S.} and Astrid Besmehn",

note = "Funding Information: We would like to thank St Andrews Fuel Cell Ltd and EPSRC for financial support.",

year = "2008",

month = sep,

day = "30",

doi = "10.1016/j.ssi.2008.01.021",

language = "English",

volume = "179",

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journal = "Solid State Ionics",

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T1 - Electrical conductivity and structure of solid solutions formed in the La0.8Sr0.2MnO3-La0.95Ni0.6Fe0.4O3 system

AU - Konysheva, Elena

AU - Irvine, John T.S.

AU - Besmehn, Astrid

N1 - Funding Information: We would like to thank St Andrews Fuel Cell Ltd and EPSRC for financial support.

PY - 2008/9/30

Y1 - 2008/9/30

N2 - The transport properties and structure of the solid solutions formed in the (100 - x) La0.8Sr0.2MnO3 (LSM)-x La0.95Ni0.6Fe0.4O3 (LNF) system were studied for the first time. The parent LSM and LNF perovskites and the solid solutions formed in the concentration ranges x < 30 and 70 ≤ x ≤ 100 exhibited a rhombohedral structure. The unit cell volume of these solid solutions decreases with increasing LNF content. Formation of a new phase with an orthorhombic symmetry was observed in the concentration range 35 ≤ x< 70. Lower transport properties of the (100 - x)LSM-xLNF, 43 ≤ x ≤ 53, compositions as compared to the parent LSM and LNF perovskites can be explained with the formation of a new phase with orthorhombic structure. The (100 - x)LSM-xLNF single phase perovskites possess metallic type of conductivity in a narrow concentration and temperature range.

AB - The transport properties and structure of the solid solutions formed in the (100 - x) La0.8Sr0.2MnO3 (LSM)-x La0.95Ni0.6Fe0.4O3 (LNF) system were studied for the first time. The parent LSM and LNF perovskites and the solid solutions formed in the concentration ranges x < 30 and 70 ≤ x ≤ 100 exhibited a rhombohedral structure. The unit cell volume of these solid solutions decreases with increasing LNF content. Formation of a new phase with an orthorhombic symmetry was observed in the concentration range 35 ≤ x< 70. Lower transport properties of the (100 - x)LSM-xLNF, 43 ≤ x ≤ 53, compositions as compared to the parent LSM and LNF perovskites can be explained with the formation of a new phase with orthorhombic structure. The (100 - x)LSM-xLNF single phase perovskites possess metallic type of conductivity in a narrow concentration and temperature range.

KW - Electrical conductivity

KW - Perovskites

KW - Semiconducting-metallic transition

KW - Solid oxide fuel cell

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