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

^*Corresponding author for this work

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

UN SDGs

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

SDG 7 Affordable and Clean Energy

Free Keywords

Electrical conductivity
Perovskites
Semiconducting-metallic transition
Solid oxide fuel cell

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/j.ssi.2008.01.021

Cite this

@article{3ac8080f74c74b468de75135f3f5c361,

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",

pages = "1432--1435",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier BV",

number = "27-32",

}

TY - JOUR

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

UR - https://www.scopus.com/pages/publications/48349132004

U2 - 10.1016/j.ssi.2008.01.021

DO - 10.1016/j.ssi.2008.01.021

M3 - Article

AN - SCOPUS:48349132004

SN - 0167-2738

VL - 179

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EP - 1435

JO - Solid State Ionics

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IS - 27-32

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