Results 31 to 40 of about 2,272 (222)
Microstructural Characterization of ZnO Varistors.
Journal of the Japan Society of Powder and Powder Metallurgy, 1995 Two kinds of commercial ZnO system varistors were investigated with relevance to their microstructures. Particularly, face-to-face fracture surfaces were characterized in terms of secondary electron image and backscatterd electron image to clarify the existence of precipitates at the grain-to-grain interface.
Shunji Takeda +2 more
openaire +2 more sources
Computer Simulation of ZnO Varistors Failures [PDF]
MRS Proceedings, 1997 ABSTRACTA simple thermo-mechanical model is applied to evaluate the influence of the nonuni-formity of ZnO varistor disks used in surge arresters on their energy handling capability. By solving heat transfer equations for a varistor disk with nonuniform electrical properties, we compute the time dependence of the temperature profile and the ...
Bartkowiak, M. +3 more
openaire +1 more source
Non-Linear I-V Characteristics of Double Schottky Barriers and Polycrystalline Semiconductors
, 1992 An attempt to determine theoretically the highly non-linear current-voltage (I-V) characteristics of polycrystalline semiconductors, such as ZnO-based varistors, is made from the electrical properties of individual grain boundaries under dc bias.
Bernasconi +30 more
core +1 more source
Detection mechanism in highly sensitive ZnO nanowires network gas sensors
, 2019 Metal-oxide nanowires are showing a great interest in the domain of gas sensing due to their large response even at a low temperature, enabling low-power gas sensors.
Caicedo, Nohora +4 more
core +1 more source
Immittance Spectroscopy of Smart Components and Novel Devices [PDF]
, 1994 AC small-signal immittance spectroscopy is employed as a viable tool to demonstrate electrical characterization, performance improvement, and quality assurance issues of smart materials-based components and novel devices. The variation in the ac response,
Alim, Mohammad Anwarul +2 more
core +3 more sources
Electrical degradation of double-Schottky barrier in ZnO varistors
AIP Advances, 2016 Researches on electrical degradation of double-Schottky barrier in ZnO varistors are reviewed, aimed at the constitution of a full picture of universal degradation mechanism within the perspective of defect.
Jinliang He, Chenlu Cheng, Jun Hu
doaj +1 more source
Ultra‐Rapid Blacklight Sintering for ZnO‐Based Varistors With Optimized Functional Properties
Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.ABSTRACT The increasing demand for energy‐efficient optoelectronic systems has intensified interest in high‐performance ceramic varistors, which are critical components in surge protection applications. In this study, ZnO‐based varistors were fabricated using a novel blacklight sintering (BLS) technique, which employs high‐powered blue light, and were ...
Ahmad Sayyadi‐Shahraki +4 more
wiley +1 more source
A first principles study of wurtzite-structure MnO [PDF]
, 2003 We present results of a density functional theory study of MnO in the wurtzite structure. Our motivation is provided by recent experiments reporting ferromagnetism in Mn-doped wurtzite structure ZnO.
Gopal, Priya +2 more
core +2 more sources
Grain Boundary Space Charge Engineering of Solid Oxide Electrolytes: Model Thin Film Study
Advanced Functional Materials, Volume 36, Issue 14, 16 February 2026.This study demonstrates unprecedented control of grain boundary electrical properties in solid electrolytes. Selective diffusion of cations through grain boundaries in thin films enables 12 orders of magnitude variation in ionic resistance, proving that systematic chemical modification of grain boundary electrical properties is feasible.
Thomas Defferriere +5 more
wiley +1 more source
IEEE Access, 2019 This paper investigated the effects of sintering temperature on the microstructure and electrical properties of ZrO2-doped zinc oxide (ZnO) varistor ceramics. The results show that, the additive ZrO2 exists as independent second phase between ZnO grains,
Pengkang Xie, Jianping Hu
doaj +1 more source