Ionic Conductivity Study on the New High Oxide Conducting Perovskite LaGaO3

1998 ◽  
Vol 527 ◽  
Author(s):  
G.V.M. Kiruthika ◽  
U.V. Varadaraju
Keyword(s):  
Activation Energy ◽  
Ionic Conductivity ◽  
Single Phase ◽  
Ion Conductivity ◽  
Lanthanum Gallate ◽  
Migration Energy ◽  
Ion Migration ◽  
Oxide Ion Conductivity ◽  
Unit Cell Size ◽  
Oxide Ion

ABSTRACTOxide ion conductivity studies have been done on the Lanthanum Gallate based compounds. Yttrium substitution at the Ga site has been attempted to increase the unit cell size. Single phase was obtained for limited Y substituion i.e., La0.9Sr0.1Ga0.7Y0.1Mg0.2O3-x. It is found that the activation energy for the oxide ion conductivity has decreased for this composition. Based on the tolerance factor and B-site radius values, the migration energies were obtained for the LaGaO3 based perovskites. It is observed that migration energy has been significantly reduced upon substitution at the B-site. Absence of an enhancement in the conductivity with Yttrium substitution could be due to the vaccancy ordering inhibiting the oxide ion migration.

Enhanced Oxide Ion Diffusion in the Interlanthanide Perovskite LaTmO3

1998 ◽  
Vol 527 ◽  
Author(s):  
M. Deepa ◽  
U.V. Varadaraju
Keyword(s):  
Ionic Conductivity ◽  
Single Phase ◽  
Lanthanum Gallate ◽  
Ion Diffusion ◽  
Ion Conductor ◽  
Similar Compound ◽  
Oxide Ion Conductivity ◽  
Oxygen Ion ◽  
Oxygen Ion Diffusion ◽  
Oxide Ion

ABSTRACTRecent studies on Perovskites type compounds revealed an oxide ion conductivity, higher than that of Fluorite structures. The most recent one is doped Lanthanum Gallate, which exhibits a maximum ionic conductivity of 0.14 S cm-1 and is a promising new ion conductor. The objective of this study is to synthesize and investigate the ionic conductivity of a similar compound, namely doped LaTmO3. Single phase compounds of the system La1-xSrxTm1-yMgyO3(X=0-0.2,y=0.1&0.2) were synthesized and the ionic conductivity measured at various temperatures. The results showed that ionic conductivity improved significantly with Sr doping. It showed highest oxygen ion diffusion and catalytic activity for Sr doped LaTmO3.

scholarly journals The relationship between oxide-ion conductivity and cation vacancy order in the hybrid hexagonal perovskite Ba3VWO8.5

2020 ◽  
Vol 8 (32) ◽  
pp. 16506-16514 ◽  
Author(s):  
Asma Gilane ◽  
Sacha Fop ◽  
Falak Sher ◽  
Ronald I. Smith ◽  
Abbie C. Mclaughlin
Keyword(s):  
Ionic Conductivity ◽  
Long Range ◽  
Cation Vacancy ◽  
Ion Conductivity ◽  
Cation Ordering ◽  
Oxygen Diffusivity ◽  
Oxide Ion Conductivity ◽  
The Relationship ◽  
Oxide Ion

Cation ordering in Ba3VWO8.5 disrupts long-range oxygen diffusivity parallel to the c-axis resulting in reduced ionic conductivity.

Preparation of Oxygen Ion Conducting Doped Lanthanum Gallate Thin Films on Amorphous and Single Crystal Substrates by Pulsed Laser Deposition

2003 ◽  
Vol 796 ◽  
Author(s):  
Fumiaki Mitsugi ◽  
Seiji Kanazawa ◽  
Toshikazu Ohkubo ◽  
Yukiharu Nomoto ◽  
Yusaku Takita ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystal ◽  
Pulsed Laser Deposition ◽  
Complex Impedance ◽  
Pulsed Laser ◽  
Ion Conductivity ◽  
Laser Deposition ◽  
Lanthanum Gallate ◽  
Oxide Ion Conductivity ◽  
Oxide Ion

ABSTRACTAn La1-xSrxGa1-y-zMgyCozO3-(x+y+z)/2 (LSGMCO) has attracted much attention because it can be useable as an electrolyte of a solid oxide fuel cell due to its high oxide ion conductivity. We prepared LSGMCO thin films on silica glass and LaAlO3 single crystal substrates by pulsed laser deposition and evaluated their properties. LSGMCO thin films deposited at 800°C were poly-crystal and the deposition pressure affected their surface morphologies. In the case of the LaAlO3 single crystal substrate, a c-axis oriented LSGMCO thin film was obtained. DC conductivity and complex impedance of LSGMCO thin films were measured in vacuum atmosphere to investigate the effect of the crystal orientation on the oxide ion conductivity. It was revealed that resistance at a grain boundary of films is more dominant compare with the grain interior.

Structural origin of the enhanced ionic conductivity upon Nb doping in Sr11Mo4O23 defective double perovskite

2017 ◽  
Vol 46 (12) ◽  
pp. 3934-3942 ◽  
Author(s):  
C. D. Miranda ◽  
C. A. López ◽  
J. C. Pedregosa ◽  
J. A. Alonso
Keyword(s):  
Ionic Conductivity ◽  
Double Perovskite ◽  
Ion Conductivity ◽  
Oxide Ion Conductivity ◽  
Nb Doping ◽  
Oxide Ion

We report a substantial enhancement of the oxide-ion conductivity in Sr11Mo4O23 achieved by Nb doping the Mo sites.

Effect of high bismuth deficiency on structure and oxide ion conductivity of a Bi0.55MoO4 single crystal

CrystEngComm ◽  
2015 ◽  
Vol 17 (45) ◽  
pp. 8746-8751
Author(s):  
Yang Zhang ◽  
Hengjiang Cong ◽  
Nianjing Ji ◽  
Jian Liu ◽  
Xiulan Duan ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Single Crystal ◽  
Ion Conductivity ◽  
Oxide Ion Conductivity ◽  
Bismuth Molybdates ◽  
First Time ◽  
Oxide Ion

We report, for the first time, the ionic conductivity properties of two polymorphic structures of bismuth molybdates: Bi0.55MoO4 and Bi2(MoO4)3.

Effects of Pt dispersion on electronic and oxide ionic conductivity in Pr1.90Ni0.71Cu0.24Ga0.05O4

2016 ◽  
Vol 18 (16) ◽  
pp. 11125-11131 ◽  
Author(s):  
T. Ishihara ◽  
J. Hyodo ◽  
H. Schraknepper ◽  
K. Tominaga ◽  
S. Ida
Keyword(s):  
Electrical Conductivity ◽  
Ionic Conductivity ◽  
Oxygen Concentration ◽  
Ion Conductivity ◽  
Interstitial Oxygen ◽  
Oxide Ion Conductivity ◽  
Oxide Ionic Conductivity ◽  
Oxide Ion

Pt dispersion in Pr2NiO4 based oxides formed compressed strain and electrical conductivity decreases, however, the oxide ion conductivity increases by the compressed strain due to the decreased hole and the increased interstitial oxygen concentration.

Oxide ion conductivity of double doped lanthanum gallate perovskite type oxide

Ionics ◽  
1997 ◽  
Vol 3 (3-4) ◽  
pp. 209-213 ◽  
Author(s):  
T. Ishihara ◽  
H. Furutani ◽  
T. Yamada ◽  
Y. Takita
Keyword(s):  
Ion Conductivity ◽  
Lanthanum Gallate ◽  
Oxide Ion Conductivity ◽  
Perovskite Type Oxide ◽  
Perovskite Type ◽  
Oxide Ion

Oxide Ion Conductivity, Phase Transitions, and Phase Separation in Fluorite-Based Bi38−xMo7+xO78+1.5x

2010 ◽  
Vol 22 (15) ◽  
pp. 4484-4494 ◽  
Author(s):  
Xiaojun Kuang ◽  
Yuandi Li ◽  
Chris D. Ling ◽  
Ray L. Withers ◽  
Ivana Radosavljević Evans
Keyword(s):  
Phase Transitions ◽  
Phase Separation ◽  
Ion Conductivity ◽  
Oxide Ion Conductivity ◽  
Oxide Ion
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