Structural and Electrical Properties of Rare Earth Double Perovskite Oxides Ba[sub 2]CeMO[sub 6] (M = Ta[sup 5+] and Nb[sup 5+])

2011 ◽  
Author(s):  
Chandrahas Bharti ◽  
T. P. Sinha ◽  
Alka B. Garg ◽  
R. Mittal ◽  
R. Mukhopadhyay
Keyword(s):  
Rare Earth ◽  
Electrical Properties ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
Structural And Electrical Properties

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
Keyword(s):  
Electrical Properties ◽  
Double Perovskite ◽  
Structural And Electrical Properties

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.

Micro-structure, optical properties and ac conductivity of rare earth double perovskite oxides: Sr2ErNbO6

2013 ◽  
Vol 422 ◽  
pp. 78-82 ◽  
Author(s):  
Rajesh Mukherjee ◽  
Sadhan Chanda ◽  
Chandrahas Bharti ◽  
P. Sahu ◽  
T.P. Sinha
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Ac Conductivity ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
Micro Structure

Structural and Electrical Properties of Rare Earth Modified Tungsten Bronze Niobates

2014 ◽  
Vol 20 (3) ◽  
pp. 689-692
Author(s):  
B. N. Parida ◽  
Piyush R. Das ◽  
R. Padhee ◽  
R. N. P. Choudhary
Keyword(s):  
Rare Earth ◽  
Electrical Properties ◽  
Tungsten Bronze ◽  
Structural And Electrical Properties

Ion Modification for Improvement of Electrical Properties of Perovskite-based Ferroelectric Thin Films Fabricated by Chemical Solution Deposition Method

2005 ◽  
Vol 902 ◽  
Author(s):  
Hiroshi Uchida ◽  
Shintaro Yasui ◽  
Risako Ueno ◽  
Hiroshi Nakaki ◽  
Ken Nishida ◽  
...  
Keyword(s):  
Thin Films ◽  
Rare Earth ◽  
Electrical Properties ◽  
Chemical Solution Deposition ◽  
Perovskite Oxides ◽  
Ferroelectric Thin Films ◽  
Chemical Solution ◽  
Ferroelectric Films ◽  
Solution Deposition ◽  
Crystal Anisotropy

AbstractIon modification for various perovskite-based ferroelectric thin films using rare-earth cations was attempted for improving the electrical properties. Strategy for controlling the electrical properties is mainly based on two concepts, that is, (i) substituting the volatile cations such as Pb2+ and Bi3+, and (ii) controlling the crystal anisotropy of perovskite unit cell. In this study, the influences of ion-modification conditions (i.e., amount, species and occupying site of substituent cations) on the electrical properties of perovskite-based ferroelectric films fabricated by a chemical solution deposition were investigated. Substituting volatile cations in simple-perovskite oxides, such Pb2+ in Pb(Zr,Ti)O3 and Bi3+ in BiFeO3, for the rare-earth cations like La3+ and Nd3+ reduced the leakage current density of these films due to suppressing the metal and / or oxygen vacancies, as well as in layered-perovskite oxides, such as Bi4Ti3O12 films [i.e., strategy (i)]. Also, crystal anisotropy of perovskite-based oxides could controlled by varying the species and the occupying site of substituent cations [i.e., strategy (ii)]; for example, the crystal anisotropy of Pb(Zr,Ti)O3 lattice was elongated by Ti- and Zr-site (B-site) substitution using rare-earth cations whose ionic radii locate on the smaller part of rare-earth series (such as Y3+, Dy3+), that resulted in enhancing the spontaneous polarization. We concluded that the strategy for controlling the electrical property mentioned in this study would be applicable for a various kind of perovskite-based ferroelectric films.

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