TY - JOUR
T1 - Oxygen storage-related properties of substituted BaLnMn 2 O 5+δ A-site ordered manganites
AU - Swierczek, Konrad
AU - Klimkowicz, Alicja
AU - Niemczyk, Anna
AU - Olszewska, Anna
AU - Rząsa, Tomasz
AU - Molenda, Janina
AU - Takasaki, Akito
N1 - Funding Information:
The project was funded by the National Science Centre Poland (NCN) on the basis of the decision number DEC-2011/01/B/ST8/04046.
Publisher Copyright:
© 2014 World Scientific Publishing Company.
PY - 2014/12/16
Y1 - 2014/12/16
N2 - In this work, we present results showing modification of the oxygen storage-related properties of perovskite-type oxides based on BaYMn2O5+δ, having A-site layer-type cation order. Y3+ is the lightest among suitable cations, which allows to obtain such the structural order, and at the same time, it provides the highest theoretical oxygen storage capacity. However, substitution of Y3+ by Sm3+cations may be beneficial, and BaY0.5Sm0.5Mn2O5+δ material shows enhanced reduction kinetics. Furthermore, partial substitution of Ba2+ by Sr2+ increases reversible oxygen storage capacity, but at the same time slows down the reduction speed. In addition, for higher concentration of strontium, it is not possible to obtain single phase materials.
AB - In this work, we present results showing modification of the oxygen storage-related properties of perovskite-type oxides based on BaYMn2O5+δ, having A-site layer-type cation order. Y3+ is the lightest among suitable cations, which allows to obtain such the structural order, and at the same time, it provides the highest theoretical oxygen storage capacity. However, substitution of Y3+ by Sm3+cations may be beneficial, and BaY0.5Sm0.5Mn2O5+δ material shows enhanced reduction kinetics. Furthermore, partial substitution of Ba2+ by Sr2+ increases reversible oxygen storage capacity, but at the same time slows down the reduction speed. In addition, for higher concentration of strontium, it is not possible to obtain single phase materials.
KW - A-site ordered perovskites
KW - BaLnMn O δ
KW - crystal structure
KW - oxygen storage materials
KW - thermogravimetry
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U2 - 10.1142/S1793604714400049
DO - 10.1142/S1793604714400049
M3 - Article
AN - SCOPUS:84929514131
SN - 1793-6047
VL - 7
JO - Functional Materials Letters
JF - Functional Materials Letters
IS - 6
M1 - 1440004
ER -