Effect of lanthanum (La3+) doping on the structural and electrical properties of double perovskite Sr2NiMoO6

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 22094-22102 ◽  
Author(s):  
Pravin Kumar ◽  
Nitish Kumar Singh ◽  
Govind Gupta ◽  
Prabhakar Singh

To study the effect of La3+ doping on structural and electrical properties, a few compositions of the system Sr2−xLaxNiMoO6−δ (x = 0.02, 0.04, 0.06, 0.08, and 0.10) were synthesized via the citrate–nitrate route.

2015 ◽  
Vol 121 (2) ◽  
pp. 635-644 ◽  
Author(s):  
Pravin Kumar ◽  
Nitish Kumar Singh ◽  
Rajesh Kumar Singh ◽  
Prabhakar Singh

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4044 ◽  
Author(s):  
Iga Szpunar ◽  
Ragnar Strandbakke ◽  
Magnus Helgerud Sørby ◽  
Sebastian Lech Wachowski ◽  
Maria Balaguer ◽  
...  

The application of double perovskite cobaltites BaLnCo2O6−δ (Ln = lanthanide element) in electrochemical devices for energy conversion requires control of their properties at operating conditions. This work presents a study of a series of BaLnCo2O6−δ (Ln = La, Pr, Nd) with a focus on the evolution of structural and electrical properties with temperature. Symmetry, oxygen non-stoichiometry, and cobalt valence state have been examined by means of Synchrotron Radiation Powder X-ray Diffraction (SR-PXD), thermogravimetry (TG), and X-ray Absorption Spectroscopy (XAS). The results indicate that all three compositions maintain mainly orthorhombic structure from RT to 1000 °C. Chemical expansion from Co reduction and formation of oxygen vacancies is observed and characterized above 350 °C. Following XAS experiments, the high spin of Co was ascertained in the whole range of temperatures for BLC, BPC, and BNC.


2021 ◽  
Vol 127 (12) ◽  
Author(s):  
K. Iben Nassar ◽  
M. Slimi ◽  
N. Rammeh ◽  
S. Soreto Teixeira ◽  
M. P. F. Graça

2011 ◽  
Vol 3 (10) ◽  
pp. 1-4 ◽  
Author(s):  
Bushra A Hasan ◽  
◽  
Ghuson H Mohamed ◽  
Amer A Ramadhan

Author(s):  
A. Kareem Dahash Ali ◽  
Nihad Ali Shafeek

This study included the fabrication of    compound (Tl2-xHgxBa2-ySryCa2Cu3O10+δ) in a manner solid state and under hydrostatic pressure ( 8 ton/cm2) and temperature annealing(850°C), and determine the effect of the laser on the structural and electrical properties elements in the compound, and various concentrations of x where (x= 0.1,0.2,0.3 ). Observed by testing the XRD The best ratio of compensation for x is 0.2 as the value of a = b = 5.3899 (A °), c = 36.21 (A °) show that the installation of four-wheel-based type and that the best temperature shift is TC= 142 K  .When you shine a CO2 laser on the models in order to recognize the effect of the laser on these models showed the study of X-ray diffraction of these samples when preparing models with different concentrations of the values ​​of x, the best ratio of compensation is 0.2 which showed an increase in the values ​​of the dimensions of the unit cell a=b = 5.3929 (A °), c = 36.238 (A°). And the best transition temperature after shedding laser is TC=144 K. 


Sign in / Sign up

Export Citation Format

Share Document