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

Elena Konysheva; John Thomas Sirr 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 Thomas Sirr Irvine, Astrid Besmehn

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	1432-1435
Number of pages	4
Journal	Solid State Ionics
Volume	179
Issue number	27-32
Early online date	10 Mar 2008
DOIs	https://doi.org/10.1016/j.ssi.2008.01.021
Publication status	Published - 30 Sept 2008

Keywords

perovskites
electrical conductivity
solid oxide fuel cell
semiconducting-metallic transition
STRUCTURE REFINEMENT
CATHODE MATERIAL
PHASE
STABILITY
POWDER

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@article{48e0cf3a635b473e893ca1527b9d5316,

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 = "perovskites, electrical conductivity, solid oxide fuel cell, semiconducting-metallic transition, STRUCTURE REFINEMENT, CATHODE MATERIAL, PHASE, STABILITY, POWDER",

author = "Elena Konysheva and Irvine, \{John Thomas Sirr\} and Astrid Besmehn",

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",

number = "27-32",

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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 Thomas Sirr

AU - Besmehn, Astrid

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 - perovskites

KW - electrical conductivity

KW - solid oxide fuel cell

KW - semiconducting-metallic transition

KW - STRUCTURE REFINEMENT

KW - CATHODE MATERIAL

KW - PHASE

KW - STABILITY

KW - POWDER

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

SN - 0167-2738

VL - 179

SP - 1432

EP - 1435

JO - Solid State Ionics

JF - Solid State Ionics

IS - 27-32

ER -

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

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Material for high Temp FCT EP/E064248/1: Materials for High Temperature Fuel Cell Technology

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

Abstract

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Material for high Temp FCT EP/E064248/1: Materials for High Temperature Fuel Cell Technology

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