Structural and ac electrical properties of a newly synthesized single phase rare earth double perovskite oxide: Ba2CeNbO6

New electron doped double perovskite compound (Sr2-xSmx) FeMoO6 (0≤x≤0.25) has been synthesized by solid-state reaction. Crystal structure and magnetic properties of the compounds have been investigated by X-ray powder diffraction (XRD) and magnetic measurements. XRD revealed that all the compounds were of single phase and belonged to a I 4/m lattice. The degree of cationic ordering on the B site was decreased pronouncedly by the electron doping. Different from the results of La- and Nd-doped Sr2FeMoO6, Curie temperature (TC) of (Sr2-xSmx) FeMoO6 decreased first with the doping and then increased beyond x = 0.15, indicating that steric effect was enhanced as the radius of rare-earth ions decreased.

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Study on the structural and electrical properties of the double perovskite oxide SrMn0.5Nb0.5O3−δ

Journal of Materials Chemistry ◽

10.1039/b204248g ◽

2002 ◽

Vol 12 (8) ◽

pp. 2356-2360 ◽

Cited By ~ 27

Author(s):

Shanwen Tao ◽

John T. S. Irvine

Keyword(s):

Electrical Properties ◽

Double Perovskite ◽

Perovskite Oxide ◽

Structural And Electrical Properties

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Synthesis, structure and dielectric properties of a rare earth double perovskite oxide Ba2CeTaO6

Materials Research Bulletin ◽

10.1016/j.materresbull.2011.05.007 ◽

2011 ◽

Vol 46 (9) ◽

pp. 1431-1436 ◽

Cited By ~ 9

Author(s):

Chandrahas Bharti ◽

T.P. Sinha

Keyword(s):

Rare Earth ◽

Dielectric Properties ◽

Double Perovskite ◽

Perovskite Oxide

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Effects of Carrier on Supported Rare Earth Double Perovskite Oxide Catalysts for Catalytic Combustion of Methane

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.1601 ◽

2012 ◽

Vol 512-515 ◽

pp. 1601-1606 ◽

Cited By ~ 3

Author(s):

Ran Ran Ding ◽

Jia Nan Hu ◽

Rui Sheng Hu ◽

Ying Liu ◽

Ling Jie Wang

Keyword(s):

Rare Earth ◽

Catalytic Combustion ◽

Supported Catalyst ◽

Double Perovskite ◽

Active Phase ◽

Catalytic Performance ◽

Oxide Catalysts ◽

Perovskite Oxide ◽

Impregnation Method ◽

Oxide Support

Supported rare earth double perovskite (La2MnNiO6) oxide catalysts were prepared by incipient wet impregnation method for methane catalytic combustion, and effects of the support (Al2O3, ZrO2 and MgO) were investigated. The loaded catalysts were characterized by means of XRD, TPR, SEM techniques and their catalytic activities were tested by complete methane oxidation. Depending on the different oxide carrier (e.g. Al2O3, MgO and ZrO2), catalysts have different catalytic properties, because the interaction of metal oxide-support will affect both redox property and dispersity of the active phase. The results on catalysts have shown that the dispersion on Al2O3 and MgO supports had an effect to enhance the catalytic performances of the catalysts that had been treated at 1100 oC. The activity of ZrO2 supported catalyst significantly decreases when calcination temperature at is 1100 oC. The dispersity of the active phase and the nature of the oxide carrier played an important role in the catalytic performance.

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