Outstanding temperature- and electric field-independent dielectric characteristics of KNbO3-BaTiO3 ceramic for X9R MLCC application
Source abstract
Abstract
(1−z)KNbO 3–zBaTiO 3 [(1−z)KN–zBT] ceramics were densified at 1040–1080 °C. As z increased, the Curie temperature and the orthorhombic–tetragonal phase transition temperature of the ceramics decreased and broadened. The relaxor property, which is responsible for the temperature stability of the dielectric property of the (1−z)KN–zBT ceramics, increased with the increase in z. Particularly, the (1−z)KN–zBT ceramics (0.08 ≤ z ≤ 0.13) satisfied the X9R multilayer ceramic capacitor (MLCC) requirements. The core-shell structure was not observed in the 0.9KN-0.1BT ceramic. The 3.0 mol% CuO-added 0.9KN-0.1BT (CKN-BT) ceramic was sintered at a lower temperature of 950 °C and it satisfied the X9R MLCC requirement as well. The MLCCs with 11 ceramic layers were fabricated using the CKN-BT ceramic. This MLCC satisfied the requirement of X9R MLCC regulations and provided outstanding capacitance stability for the electric field. Therefore, CKN-BT ceramic is a good candidate for X9R MLCC.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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