Highly oriented ZnO varistors as ceramics with fine grains using tape casting and lamination, and the characteristics of anisotropy
Source abstract
Abstract
Highly c-axis oriented ZnO varistors are able to be successfully fabricated by industrial tape casting and lamination process, which use fine templated ZnO. They have Lotgering factor of 0.637 which is an index of degree of orientation, and are composed of isotropic fine grains of 2.2–3.0 µm. Significant variations are obtained in electrical properties of grain boundaries by crystalline orientation. Break down voltage per a grain boundary (Vgb) shows a decrease in perpendicular directions to c-axis alignment from those in parallel (−27 % in parallel to casting direction, −14 % in transverse), simultaneously with an increase in εr of relative permittivity. The orientational control is more likely to contribute enhancing the protection performance of ZnO based multilayer ceramic varistors.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: ZnO doping and properties · Thin-Film Transistor Technologies · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Device Solutions Business Division, Panasonic Industry Co., Ltd.
Green Innovation Center, Green Transformation Division, Panasonic Holdings Co., Ltd.
References (26)
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