scholarly journals Effect of Cation Ordering on the Performance and Chemical Stability of Layered Double Perovskite Cathodes

Materials ◽  
2018 ◽  
Vol 11 (2) ◽  
pp. 196 ◽  
Author(s):  
Carlos Bernuy-Lopez ◽  
Laura Rioja-Monllor ◽  
Takashi Nakamura ◽  
Sandrine Ricote ◽  
Ryan O’Hayre ◽  
...  
Keyword(s):  
Chemical Stability ◽  
Double Perovskite ◽  
Cation Ordering

Epitaxial growth and B-site cation ordering in layered double perovskite La2CuSnO6 thin films

2006 ◽  
Vol 89 (21) ◽  
pp. 211913 ◽  
Author(s):  
A. Masuno ◽  
M. Haruta ◽  
M. Azuma ◽  
H. Kurata ◽  
S. Isoda ◽  
...  
Keyword(s):  
Thin Films ◽  
Epitaxial Growth ◽  
Double Perovskite ◽  
Cation Ordering

Chemical stability and compatibility of double perovskite anode materials for SOFCs

2013 ◽  
Vol 239 ◽  
pp. 1-7 ◽  
Author(s):  
L. dos Santos-Gómez ◽  
L. León-Reina ◽  
J.M. Porras-Vázquez ◽  
E.R. Losilla ◽  
D. Marrero-López
Keyword(s):  
Chemical Stability ◽  
Anode Materials ◽  
Double Perovskite

Magnetization Evolution with Hole Doping Level in (Sr2-xNax)FeMoO6

2011 ◽  
Vol 239-242 ◽  
pp. 3165-3168
Author(s):  
Qin Zhang ◽  
Chang Li ◽  
Zhen Feng Xu ◽  
Ke Yan Wang
Keyword(s):  
Crystal Structure ◽  
Saturation Magnetization ◽  
Doping Level ◽  
Single Phase ◽  
Sol Gel ◽  
Double Perovskite ◽  
Hole Doping ◽  
Cation Ordering ◽  
Xrd Pattern ◽  
Method Effects

Hole doped double perovskite compounds (Sr, Na)2FeMoO6 with the Na content of x = 0, 0.02, 0.03, 0.07 and 0.17 have been synthesized by sol-gel method. Effects of hole doping on the crystal structure and magnetic properties of Sr2FeMoO6 have been investigated. XRD pattern indicates that all the samples are of single phase and belong to the space group I4/m. The degree of cation ordering in the Na-doped Sr2FeMoO6 compounds shows a non-monotonic variation with the doping level. The saturation magnetization of the compound increases with x for x<0.17. Similar to the electron doped Sr2FeMoO6, provided that the doped hole enters selectively the spin-down band, the variation of the saturation magnetization can be explained in light of the ferrimagnetic model (FIM).

Magnetic Property of Hole-Doped Double Perovskite Compound

2013 ◽  
Vol 464 ◽  
pp. 50-53
Author(s):  
Suo Jia Yuan ◽  
Qin Zhang ◽  
Hai Bo Sun ◽  
Hui Wang
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Doping Level ◽  
Single Phase ◽  
Magnetic Measurements ◽  
Double Perovskite ◽  
Cation Ordering ◽  
High Doping Level ◽  
Xrd Pattern ◽  
X Ray

Crystal structure and magnetic properties of hole-doped double perovskite compounds (Sr, Na)2FeMoO6 have been investigated by means of X-ray powder diffraction (XRD) and magnetic measurements. XRD pattern indicates that all the samples are of single phase and belong to the space group I4/m. The degree of cation ordering in the Na-doped Sr2FeMoO6 compounds shows a non-monotonic variation with the doping level, increasing from x=0 to x=0.03 and decreasing slightly with further increase of the doping. However, the Curie temperature of the compound decreases at low doping level and increases at high doping level.

scholarly journals Epitaxial thin films of multiferroic Bi2FeCrO6 with B-site cationic order

2007 ◽  
Vol 22 (8) ◽  
pp. 2102-2110 ◽  
Author(s):  
Riad Nechache ◽  
Louis-Philippe Carignan ◽  
Lina Gunawan ◽  
Catalin Harnagea ◽  
Gianluigi A. Botton ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Room Temperature ◽  
Magnetic Ordering ◽  
Double Perovskite ◽  
Orientation Dependence ◽  
Cation Ordering ◽  
Epitaxial Thin Films ◽  
Transmission Electron Microscopy Analysis ◽  
Electron Microscopy Analysis

Epitaxial thin films of Bi2FeCrO6 (BFCO) have been synthesized by pulsed laser deposition on SrRuO3 on (100)- and (111)-oriented SrTiO3 substrates. Detailed x-ray diffraction and cross-section transmission electron microscopy analysis revealed a double perovskite crystal structure of the BFCO epitaxial films very similar to that of BiFeO3 along with a particularly noteworthy Fe3+/Cr3+ cation ordering along the [111] direction. The films contain no detectable magnetic iron oxide impurities and have the correct cationic average stoichiometry throughout their thickness. They however exhibit a slight modulation in the Fe and Cr compositions forming complementary stripe patterns, suggesting minor local excess or depletion of Fe and Cr. The epitaxial BFCO films exhibit good ferroelectric and piezoelectric properties, in addition to magnetic properties at room temperature, as well as an unexpected crystallographic orientation dependence of their room-temperature magnetic properties. Our results qualitatively confirm the predictions made using the ab initio calculations: the double perovskite structure of BFCO films exhibit a Fe3+/Cr3+ cation ordering and good multiferroic properties, along with the unpredicted existence of magnetic ordering at room temperature.

scholarly journals Structural and magnetic characterization of the double perovskite Pb2FeMoO6

2016 ◽  
Vol 4 (7) ◽  
pp. 1533-1542 ◽  
Author(s):  
F. Mezzadri ◽  
D. Delmonte ◽  
F. Orlandi ◽  
C. Pernechele ◽  
G. Calestani ◽  
...  
Keyword(s):  
Double Perovskite ◽  
Cation Ordering ◽  
Magnetic Characterization ◽  
Antiphase Domains

Structural and magnetic characterization of Pb2FeMoO6 reveals the central role played by nanometer-sized antiphase domains involved in the Fe/Mo cation ordering.

Highly active hydrogen evolution catalysis on oxygen-deficient double-perovskite oxide PrBaCo2O6−δ

2020 ◽  
Vol 4 (5) ◽  
pp. 1519-1529 ◽  
Author(s):  
Hayato Togano ◽  
Kaisei Asai ◽  
Seiji Oda ◽  
Hidekazu Ikeno ◽  
Shogo Kawaguchi ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Oxygen Deficiency ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
Perovskite Oxide ◽  
Cation Ordering ◽  
Active Hydrogen ◽  
Multiple Factors ◽  
Highly Active ◽  
A Site

Oxygen-deficient double perovskite oxides PrBaCo2O6−δ exhibit highly active hydrogen evolution reaction catalysis, which is associated with multiple factors: oxygen deficiency, high Co valence, and A-site cation ordering.

Sign in / Sign up

Export Citation Format

Share Document