Electrical transport mechanism in a newly synthesized rare earth double perovskite oxide Sr2CeTaO6

2013 ◽  
Vol 409 ◽  
pp. 87-92 ◽  
Author(s):  
Chandrahas Bharti ◽  
Sadhan Chanda ◽  
T.P. Sinha
Keyword(s):  
Rare Earth ◽  
Electrical Transport ◽  
Transport Mechanism ◽  
Double Perovskite ◽  
Perovskite Oxide

Structural and electrical transport properties of a rare earth double perovskite oxide: Ba2ErNbO6

2014 ◽  
Vol 32 (4) ◽  
pp. 334-342 ◽  
Author(s):  
Rajesh Mukherjee ◽  
Binita Ghosh ◽  
Sujoy Saha ◽  
Chandrahas Bharti ◽  
T.P. Sinha
Keyword(s):  
Rare Earth ◽  
Transport Properties ◽  
Electrical Transport ◽  
Double Perovskite ◽  
Perovskite Oxide ◽  
Electrical Transport Properties

Dielectric Relaxation of Rare Earth Ordered Double Perovskite Oxide Ba2ErTaO6

2015 ◽  
Vol 45 (1) ◽  
pp. 846-852 ◽  
Author(s):  
Rajesh Mukherjee ◽  
Alo Dutta ◽  
T. P. Sinha
Keyword(s):  
Rare Earth ◽  
Dielectric Relaxation ◽  
Double Perovskite ◽  
Perovskite Oxide

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

2012 ◽  
Vol 512-515 ◽  
pp. 1601-1606 ◽  
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.

scholarly journals Magnetic and Electrical Transport Properties of Double Perovskite Sr2FeMoO6Prepared by Sol-Gel Method

2011 ◽  
Vol 8 (s1) ◽  
pp. S189-S194 ◽  
Author(s):  
Yong-Qing Zhai ◽  
Jing Qiao ◽  
Zhang Zhang
Keyword(s):  
Transport Properties ◽  
Electrical Transport ◽  
Room Temperature ◽  
Sol Gel ◽  
Double Perovskite ◽  
Reducing Agent ◽  
Perovskite Oxide ◽  
Electrical Transport Properties ◽  
Gel Method ◽  
Sol Gel Method

With activated carbon for reducing agent, the sol-gel method was used to prepare the giant magnetoresistance materials Sr2FeMoO6, which is the double Perovskite oxide. The structure, morphology, magnetic and electrical transport properties were investigated respectively by x-ray diffraction, scanning electron microscopy and vibrating sample magnetometer. The as-synthesized sample is Sr2FeMoO6with tetragonal crystal structure and I4/mmm space group and unit cell parameter is a = 5.580Å, c = 7.882Å. The primary particles are spherical in shape and the grain size is below 100 nm. The curie temperature is above room temperature and the saturation magnetization is 13.321 A·m2/kg under 1.0 T at room temperature. The sample exhibit typical semiconductor behavior and the conductive mechanism can be described by small polaron variable range hopping model. The room temperature magnetoresistance of the sample under 1.0 T field is up to -10.02%. Moreover, it is found the dosage of citric acid and the amount of reducing agent has great effect on the phase structure and magnetic properties of the samples.

ChemInform Abstract: Rietveld Refinement and Dielectric Relaxation of a New Rare Earth Based Double Perovskite Oxide: BaPrCoNbO6.

ChemInform ◽  
2014 ◽  
Vol 45 (12) ◽  
pp. no-no
Author(s):  
Chandrahas Bharti ◽  
Mrinmoy K. Das ◽  
A. Sen ◽  
Sadhan Chandra ◽  
T. P. Sinha
Keyword(s):  
Rare Earth ◽  
Dielectric Relaxation ◽  
Rietveld Refinement ◽  
Double Perovskite ◽  
Perovskite Oxide
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