scholarly journals Controlling mixed conductivity in Na1/2Bi1/2TiO3 using A-site non-stoichiometry and Nb-donor doping

2016 ◽  
Vol 4 (24) ◽  
pp. 5779-5786 ◽  
Author(s):  
Linhao Li ◽  
Ming Li ◽  
Huairuo Zhang ◽  
Ian M. Reaney ◽  
Derek C. Sinclair
Keyword(s):  
Ion Transport ◽  
Transport Number ◽  
Mixed Conductivity ◽  
Donor Doping ◽  
Oxygen Ion ◽  
Nb Doping ◽  
A Site ◽  
Fine Tune ◽  
Ion Transport Number

Bi-excess and Nb-doping can both be used to fine-tune the Na0.5Bi0.5TiO3 oxygen-ion transport number from near zero to one.

Phase composition, electroconductivity, oxygen ion transport number, and microhardness of Ln1 − x SrxGa0.5 − y/2Al0.5 − y/2MgyO3 − δ (Ln = La, Pr, Nd; x, y = 0.10, 0.15)

2007 ◽  
Vol 43 (1) ◽  
pp. 56-63
Author(s):  
Yu. V. Danilov ◽  
A. D. Neuimin ◽  
L. A. Dunyushkina ◽  
L. A. Kuz’mina ◽  
N. S. Zybko ◽  
...  
Keyword(s):  
Phase Composition ◽  
Ion Transport ◽  
Transport Number ◽  
Oxygen Ion ◽  
Ion Transport Number

Counter-ion transport number and membrane potential in working membrane systems

2017 ◽  
Vol 504 ◽  
pp. 800-813 ◽  
Author(s):  
Mette Birch Kristensen ◽  
Anders Bentien ◽  
Michele Tedesco ◽  
Jacopo Catalano
Keyword(s):  
Membrane Potential ◽  
Ion Transport ◽  
Transport Number ◽  
Membrane Systems ◽  
Counter Ion ◽  
Ion Transport Number

scholarly journals On the Ion Transport Number of ZrO2·CaO Solid Electrolytes

1972 ◽  
Vol 36 (7) ◽  
pp. 674-679 ◽  
Author(s):  
Shinya Komatsu ◽  
Minoru Yonehara ◽  
Zensaku Kozuka
Keyword(s):  
Ion Transport ◽  
Solid Electrolytes ◽  
Transport Number ◽  
Ion Transport Number

A.C. Impedance and Transport Number Measurements of Ba6 Ta2O11

1990 ◽  
Vol 210 ◽  
Author(s):  
Takashi Goto ◽  
A.R. West
Keyword(s):  
Activation Energy ◽  
Electrical Conductivity ◽  
Solid State ◽  
Impedance Spectroscopy ◽  
Transport Number ◽  
Bulk Conductivity ◽  
Concentration Cell ◽  
Boundary Conductivity ◽  
Oxygen Ion ◽  
Ion Transport Number

AbstractBa6Ta2O11 with an oxygen—deficient perovskite—related structure, was prepared through solid state reaction of BaCO3 and Ta2O5 powders. The electrical conductivity of sintered Ba6Ta2O11 pellets was measured by a.c. impedance spectroscopy inthe temperature range between 200 and 800ºC. The conductivity at 800ºC was3.7x10-3 Ω-1 cm-1; the activation energy for bulk conduction was 0.93 eV at temperatures between 500 and 800ºC and 1.22 eV below 500ºC. The bulk conductivity was independent of atmosphere, while the grain boundary conductivity, with an activation energy of 1.08 eV, decreased as oxygen partial pressure increased. The oxygen ion transport number obtained from concentration cell measurements was 0.5 to 0.65 at temperatures from 450 to 820ºC.

scholarly journals Ion Transport Number of CaS-Na2S Solid Electrolytes

2000 ◽  
Vol 64 (2) ◽  
pp. 170-173
Author(s):  
Hiroaki Nakamura ◽  
Youichi Ogawa ◽  
Akira Kasahara ◽  
Toshiaki Kodama
Keyword(s):  
Ion Transport ◽  
Solid Electrolytes ◽  
Transport Number ◽  
Ion Transport Number

scholarly journals Comparison of strain and ferroelectric properties of La,Nb and Li,Nb co-modified BNKT–ST ceramics

2020 ◽  
Author(s):  
Rizwan Ahmed Malik ◽  
Adnan Maqbool ◽  
Salman Ali Khan ◽  
Mohsin Saleem ◽  
Muhammad Shoaib Butt ◽  
...  
Keyword(s):  
High Voltage ◽  
Ferroelectric Properties ◽  
Phase Evolution ◽  
Two Phase ◽  
Donor Doping ◽  
Phase Structures ◽  
Donor Dopant ◽  
Nb Doping ◽  
A Site ◽  
Made In

Abstract A comparison between the influence of concurrent A and B-site acceptor-donor (Li,Nb) and donor-donor (La,Nb) doping in Pb-free Bi 0.5 (Na 0.84 K 0.16 ) 0.5 TiO 3 –SrTiO 3 piezoelectrics on structure, ferroelectric and high voltage induced strain were made. In this work, Lithium was chosen as acceptor and Lanthanum was chosen as donor dopant on A-site and Nb 5+ as a B-site donor. Both modifier impurities promoted a phase evolution from the coexistent of two phase structures (rhombohedral-tetragonal) into a more symmetric single pseudocubic structure. Nonetheless, (La,Nb) donor-donor doping induced the phase transition at 1 mol%, while (Li,Nb) acceptor-donor doping at 2 mol%. Interestingly, acceptor-donor (Li,Nb) co-substitution results in the broadening of ergodic relaxor and ferroelectric (ER-FE) mixed phase boundary which is favourable for multidevice applications. This comparative study show that the A-site vacancies play a substantial role to induce the phase transformation from nonergodic-ergodic relaxor (NR-ER) and the improvement in their high voltage induced strain.

scholarly journals Ion Transport Number of Mullite with Excess SiO2

1973 ◽  
Vol 37 (4) ◽  
pp. 455-462
Author(s):  
Shinya Komatsu ◽  
Shigeo Ishitani ◽  
Shigeo Igi ◽  
Zensaku Kozuka
Keyword(s):  
Ion Transport ◽  
Transport Number ◽  
Ion Transport Number
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