Exploring the physical properties of Eu2SrCo1.5Mn0.5O7, a new n = 2 member of the Ruddlesden-Popper series (Eu,Sr)n+1(Co,Mn)nO3n+1
A new oxide of the Ruddlesden-Popper series has been isolated and structurally characterized in the Eu-Sr-Co-Mn-O system. X-ray diffraction and electron microscopy show that polycrystalline Eu 2 SrCo 1.5 Mn 0.5 O 7 constitutes the n = 2 member of a homologous series, the essential feature of which i...
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Published in | Journal of materials chemistry. A, Materials for energy and sustainability Vol. 3; no. 45; pp. 22931 - 22939 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
01.11.2015
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Subjects | |
Online Access | Get full text |
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Summary: | A new oxide of the Ruddlesden-Popper series has been isolated and structurally characterized in the Eu-Sr-Co-Mn-O system. X-ray diffraction and electron microscopy show that polycrystalline Eu
2
SrCo
1.5
Mn
0.5
O
7
constitutes the
n
= 2 member of a homologous series, the essential feature of which is the existence of two connected Co/Mn octahedral layers, separated by Eu atoms. Electrochemical studies show that the area-specific resistance of this compound is 0.15 Ω cm
2
at 700 °C in air, a performance which is comparable to that of the best state-of-the-art materials used as cathodes in intermediate temperature solid oxide fuel cells. Below 150 K the title material presents two different magnetic phenomena. The first one corresponds to the formation of ferromagnetic nanoclusters (
T
C
∼ 121 K) within an ordered Co
2+
/Mn
4+
atomic configuration, whereas at lower temperature (∼21 K) a spin glass state occurs.
A new oxide of the Ruddlesden-Popper series has been isolated and characterized in the Eu-Sr-Co-Mn-O system. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2050-7488 2050-7496 |
DOI: | 10.1039/c5ta05464h |