Electrical properties of metal oxides which have "hopping" charge carriers

1966 ◽  
Vol 43 (2) ◽  
pp. 76 ◽  
Author(s):  
J. M. Honig
Keyword(s):  
Electrical Properties ◽  
Metal Oxides ◽  
Charge Carriers

Composition-Dependent Electrical Conductivity of Ionic-Electronic Composite

1997 ◽  
Vol 500 ◽  
Author(s):  
M. Park ◽  
G. M. Choi
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Electromotive Force ◽  
Composition Dependence ◽  
Force Measurement ◽  
Ionic Transport ◽  
Charge Carriers ◽  
Stabilized Zirconia ◽  
Ionic Charge ◽  
Polarization Technique

ABSTRACTComposition. dependence of electrical conductivity of ionic-electronic composite was camined using yttria(8mol%) stabilized zirconia-NiO composites. The contributions of ectronic and ionic charge carriers to the electrical conductivity were determined by Hebb-Vagner polarization technique and electromotive force measurement of galvanic cell. Up to 6 sol% NiO addition, the conductivity decreased since the electronic NiO acted as an insulator in onic matrix. However the ionic transport was dominant until NiO content reaches 26 vol%. Mixed conduction was observed between 26 and 68 vol% of NiO. The effects of composition on he electrical properties were explained by the microstructure and thus by the distribution of two hases.

scholarly journals Ion Dynamics Study of Potato Starch + Sodium Salts Electrolyte System

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Tuhina Tiwari ◽  
Neelam Srivastava ◽  
P. C. Srivastava
Keyword(s):  
Electrical Properties ◽  
Power Law ◽  
Polymer Electrolytes ◽  
Potato Starch ◽  
Charge Carriers ◽  
Ion Dynamics ◽  
Electrolyte System ◽  
Sodium Salts ◽  
Dielectric Data

The effect of different anions, namely,SCN−,I−, andClO4−, on the electrical properties of starch-based polymer electrolytes has been studied. Anion size and conductivity are having an inverse trend indicating systems to be predominantly anionic conductor. Impact of anion size and multiplet forming tendency is reflected in number of charge carriers and mobility, respectively. Ion dynamics study reveals the presence of different mechanisms in different frequency ranges. Interestingly, superlinear power law (SLPL) is found to be present at <5 MHz frequency, which is further confirmed by dielectric data.

Impedance Spectroscopy Screening of Various Nanocrystalline Metal Oxides: Effect of Lithiation on Electrical Properties

2017 ◽  
Vol 5 (8) ◽  
pp. 1407-1414 ◽  
Author(s):  
Jacqueline E. Cloud ◽  
Curtis J. Guild ◽  
Sourav Biswas ◽  
Steven L. Suib
Keyword(s):  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Metal Oxides ◽  
Nanocrystalline Metal

Enhanced electrical properties of ZrO2-TiN based capacitors by introducing ultrathin metal oxides

2020 ◽  
Vol 279 ◽  
pp. 128490
Author(s):  
Dong-Kwon Lee ◽  
Hyo-Bae Kim ◽  
Se-Hun Kwon ◽  
Ji-Hoon Ahn
Keyword(s):  
Electrical Properties ◽  
Metal Oxides

Electrical Properties of Sb-Doped BaPbO3 Ceramics

2008 ◽  
Vol 368-372 ◽  
pp. 653-655
Author(s):  
Xin Wang ◽  
Yu Dong Lu ◽  
Zhi Qiang Zhuang
Keyword(s):  
Electrical Resistivity ◽  
Electrical Properties ◽  
Curie Temperature ◽  
Grain Boundaries ◽  
Solid Solubility ◽  
Defect Structure ◽  
Sol Gel ◽  
Charge Carriers ◽  
Donor Concentration ◽  
Main Factor

Sb-doped BaPbO3 ceramics were prepared by sol-gel method. The influence of Pb/Ba ratio and Sb concentration on the electrical properties of BaPb1+x-ySbyO3 (x=0.0, 0.1, 0.2 and 0≤y≤0.2) compositions were investigated. Holes and Pb vacancies were the major defects in lightly donor-doped BaPbO3, where the increase of donor concentration resulted in decrease of charge carriers (holes), leading to resistivity increasing. In the highly donor-doped conditions, the microstructure or solid solubility substituted defect structure as the main factor affecting the variety of resistivity. The lowest electrical resistivity of Sb-doped BaPbO3 was 2.69 × 10-4 /·cm when the Sb concentration y=0.12~0.13. Excess of Pb causes the born of barium vacancies. And, the observed PTCR behavior of BaPb1.2O3 involves the Barium vacancies in grain boundaries. 0.5 mol% Sb-doped BaPbO3 showed the best PTCR behavior and its Curie temperature was about 850°C.

Diffusion of Charged Species in Metal Oxides and Polymeric Solids Using AC Impedance Technique

2011 ◽  
Vol 312-315 ◽  
pp. 1216-1221
Author(s):  
Norlida Kamarulzaman ◽  
Roshidah Rusdi ◽  
Nor Diyana Abdul Aziz ◽  
Lili Widarti Zainudin ◽  
Zurina Osman
Keyword(s):  
Electrical Properties ◽  
Metal Oxides ◽  
Analytical Techniques ◽  
Ac Impedance ◽  
Impedance Method ◽  
Electrical Measurements ◽  
Charged Species ◽  
Impedance Technique ◽  
Properties Of Materials ◽  
Kinetics Of

The diffusion of charged species in solids is a very important part of the study of the electrical properties of materials. Electrical measurements using alternating current (ac) impedance is a powerful technique to study diffusing species in metal oxides as well as polymers. Three case studies are being presented here whereby the electrical properties of LiTaO3, Poly[2-methoxy-5-(2’-ethylhexyloxy)-(p-phenylenevinylene)] (MEH-PPV) and its composite are being studied using the same ac impedance technique. LiTaO3 is a metal oxide while MEH-PPV is a polymer. They are very different and therefore present very good examples for the versatility and power of ac impedance method. Electrical parameters such as conductivity and conduction behaviours of the conducting species can be extracted from the studies. The kinetics of the diffusing species can be elucidated by using proper analytical techniques.

Studies of Electrical Polarization Fatigue in SrBi2Ta2O9 Thin Films

1998 ◽  
Vol 541 ◽  
Author(s):  
K. M. Lee ◽  
D. Thomas ◽  
S. H. Kim ◽  
J. P. Maria ◽  
A. I. Kingon ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Oxygen Vacancies ◽  
Remanent Polarization ◽  
Energy Levels ◽  
Bias Field ◽  
Charge Carriers ◽  
Temperature Dependent ◽  
Zero Bias ◽  
Electrical Polarization

AbstractThe polarization suppression and electrical properties directly associated with the electrical polarization fatigue in SrBi2Ta2O9system were systematically investigated using Pt/SBT/Pt capacitors. Three general observations were made after 109 switching cycles: (i) ∼95% of the remanent polarization was conserved, (ii) both high and zero bias field capacitance decreased, and (iii) leakage current density increased from approximately 10−7 to 10−5 A/cm2at ∼30kV/cm2. In addition, the “knee” field, at which the leakage abruptly increases, assumed smaller values with cumulative switching cycles. Temperature dependent leakage data was collected for both as-deposited and field-cycled samples. Based on these results, we propose the possibilities of enhanced concentration of charge carriers or additional reductions in interfacial conduction barriers. Motion of oxygen vacancies to less-shallow energy levels near electrode/ferroelectric interface may allow this mechanism to occur.

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