Effects of mobile oxygen ions in top-gated synthetic antiferromagnet structure

2020 ◽  
Vol 117 (20) ◽  
pp. 202405
Author(s):  
Protyush Sahu ◽  
Delin Zhang ◽  
Thomas Peterson ◽  
Jian-Ping Wang
Keyword(s):  
Oxygen Ions ◽  
Synthetic Antiferromagnet ◽  
Mobile Oxygen

Non-ohmic conduction in sodium bismuth titanate: the influence of oxide-ion conduction

2020 ◽  
Vol 22 (36) ◽  
pp. 20941-20950
Author(s):  
F. Yang ◽  
A. R. West ◽  
D. C. Sinclair
Keyword(s):  
Bismuth Titanate ◽  
Critical Role ◽  
Ohmic Conduction ◽  
Conductivity Enhancement ◽  
Oxygen Ions ◽  
Maximum Conductivity ◽  
Dc Bias ◽  
Oxide Ion Conduction ◽  
Oxide Ion ◽  
Mobile Oxygen

A maximum conductivity enhancement of >2000% is achieved in Na0.5Bi0.51TiO3.015 under a small dc bias, in which the highly mobile oxygen ions and the electrode reactions play a critical role.

ChemInform Abstract: CN-Mayenite Ca12Al14O32(CN)2: Replacing Mobile Oxygen Ions by Cyanide Ions.

ChemInform ◽  
2015 ◽  
Vol 46 (5) ◽  
pp. no-no
Author(s):  
Martin Lerch ◽  
et al. et al.
Keyword(s):  
Oxygen Ions ◽  
Mobile Oxygen

Dynamics of Mobile Oxygen Ions in Disordered Pyrochlore-Type Oxide-Ion Conductors

2009 ◽  
Vol 289-292 ◽  
pp. 347-354 ◽  
Author(s):  
M.R. Díaz-Guillén ◽  
Karla J. Moreno ◽  
J.A. Díaz-Guillén ◽  
A.F. Fuentes ◽  
J. Garcia-Barriocanal ◽  
...  
Keyword(s):  
Activation Energy ◽  
Coupling Model ◽  
Structural Disorder ◽  
Ionic Conductors ◽  
Oxygen Ions ◽  
Different Temperatures ◽  
Cation Radius ◽  
Pyrochlore Type ◽  
Cation Size ◽  
Mobile Oxygen

We investigate the effect of cation size in the dc activation energy needed for oxygen ion conductivity, Edc, in highly disordered pyrochlore-type ionic conductors A2B2O7. Twenty compositions of general formula Ln2Zr2-yTiyO7 (Ln = Y, Dy and Gd) and Gd2-yLayZr2O7, were prepared by mechanical milling and their electrical properties measured by using impedance spectroscopy at different temperatures. We also evaluate, by using Ngai’s Coupling Model, the effect of cation radii RA and RB, on the microscopic potential-energy barrier, Ea, that oxygen ions encounter when jumping into neighboring vacant sites. We find that for a fixed B-site cation radius RB, both activation energies decrease with increasing A-site cation size, RA, as a consequence of the increment in the unit cell volume. In contrast, and for a given RA size, the dc activation energy Edc of the Ln2Zr2-yTiyO7 series increases when the average RB size increases. The latter behavior is explained in terms of the enhanced interactions among mobile oxygen ions as the structural disorder increases when RB approaches RA.

Electrochemical Studies of the Mixed-Conductor System YBa2Cu307-δ

1988 ◽  
Vol 135 ◽  
Author(s):  
G.F. Holland ◽  
S.L. Russek ◽  
A.M. Stacy ◽  
J.N. Michaels
Keyword(s):  
Oxygen Content ◽  
Coulometric Titration ◽  
Mixed Conductor ◽  
Superconducting Transition ◽  
Stabilized Zirconia ◽  
Oxygen Ions ◽  
Au Film ◽  
Zirconia Electrolyte ◽  
Paste Electrode ◽  
Mobile Oxygen

Oxygen mobility in the system YBa2Cu307-δ (0 ≤ 8 ≤ 1) has been studied by electrochemical methods over the temperature range 500 ≤ T ≤ 800 °C. The experimental cell consisted of a pellet of YBa2Cu307-δ sandwiched between an ionically-blocking Au film electrode and an electronically-blocking yttrium-stabilized zirconia electrolyte/Pt paste electrode. The concentration of mobile oxygen ions, c(02-), and the diffusion coefficient, D, were evaluated from potential step experiments. Coulometric titration studies were used to modify the oxygen content of the oxygen deficient (δ ≥ 0) material. These electrochemically-modified samples were further characterized by magnetic susceptibility measurements to monitor the effect of changes of oxygen content on the width and position of the superconducting transītion.

Influence of structural disorder on the dynamics of mobile oxygen ions in Dy2(Ti1−yZry)2O7

2007 ◽  
Vol 353 (41-43) ◽  
pp. 3947-3955 ◽  
Author(s):  
Karla J. Moreno ◽  
Antonio F. Fuentes ◽  
Ulises Amador ◽  
Jacobo Santamaría ◽  
Carlos León
Keyword(s):  
Structural Disorder ◽  
Oxygen Ions ◽  
Mobile Oxygen

CN-mayenite Ca12Al14O32(CN)2: Replacing mobile oxygen ions by cyanide ions

2014 ◽  
Vol 38 ◽  
pp. 69-78 ◽  
Author(s):  
Alexander Schmidt ◽  
Martin Lerch ◽  
Jens-Peter Eufinger ◽  
Jürgen Janek ◽  
Raimund Dolle ◽  
...  
Keyword(s):  
Oxygen Ions ◽  
Mobile Oxygen

Structural, electrical characterization and oxygen-diffusion paths in LaSrGa1-xMgxO4-δ (x=0.0-0.2) layered perovskites: an impedance spectroscopy and neutron diffraction study

2021 ◽  
Author(s):  
Carlos Marino ◽  
Juan Basbus ◽  
Ana L. Larralde ◽  
Jose Antonio Alonso ◽  
Maria Teresa Fernandez-Diaz ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Neutron Diffraction ◽  
Structural Characterization ◽  
Oxygen Diffusion ◽  
Electrical Characterization ◽  
Neutron Diffraction Study ◽  
Oxygen Ions ◽  
Diffusion Paths ◽  
Layered Perovskites

This work presents the results of the structural characterization of LaSrGa1-xMgxO4-δ oxides with x=0.0-0.2 (LSGM'); these oxides with layered K2NiF4-type structure are potential electrolytes of oxygen ions with applications in...

scholarly journals Structure and transport properties of triple-conducting BaxSr1−xTi1−yFeyO3−δ oxides

RSC Advances ◽  
2021 ◽  
Vol 11 (32) ◽  
pp. 19570-19578
Author(s):  
T. Miruszewski ◽  
K. Dzierzgowski ◽  
P. Winiarz ◽  
D. Jaworski ◽  
K. Wiciak-Pawłowska ◽  
...  
Keyword(s):  
Transport Properties ◽  
Charge Carriers ◽  
Conducting Oxides ◽  
Oxygen Ions ◽  
Perovskite Materials

BaxSr1−xTi1−yFeyO3−δ-based perovskite materials with different barium and iron contents are reported as triple conducting oxides (TCOs), which may conduct three charge carriers: oxygen ions, protons and electrons/holes.

K-, L- and M-shell X-ray productions induced by oxygen ions in the 0.8–1.6MeV/amu range

2016 ◽  
Vol 381 ◽  
pp. 34-38 ◽  
Author(s):  
I. Gorlachev ◽  
N. Gluchshenko ◽  
I. Ivanov ◽  
A. Kireyev ◽  
S. Kozin ◽  
...  
Keyword(s):  
X Ray ◽  
Oxygen Ions
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