Fabrication and electrical properties of the fast response Mn1.2Co1.5Ni0.3O4 miniature NTC chip thermistors
Source abstract
Abstract
Abstract Mn1.2Co1.5Ni0.3O4 ceramic chips with 90, 100, 110 and 120 µm thickness were developed using the tape casting method. The structure, electrical properties and thermal time constant have been investigated as a function of the thickness of the miniature NTC chip thermistors. The ρ25 increased from 127 to 449.7 Ω cm and the thermal constant B25/50 increased from 52.8 to 180.5 K as the thickness increased. This could be a result of the increased grain boundary resistance and Mn3+/Mn4+ ratio (0.7–1.02) from the increased thickness. The thermal time constants were 0.83, 0.89, 1.05 and 1.10 s for chip thermistors with thicknesses from 90 to 120 µm, respectively. This reveals that the thickness of chips could affect the thermal time constant, a result of significantly different dissipation constants and heat capacities in MCN thermistors. The proposed sensors demonstrated a superior temporal response.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrical and Thermal Properties of Materials · Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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