• B MASIN

      Articles written in Bulletin of Materials Science

    • Analysis on the influence of ZnO addition on microwave dielectric properties of Li$_2$MgSiO$_4$ ceramics

      ALEENA ROSE B MASIN K ASHOK H SREEMOOLANADHAN T VIJAYAKUMAR

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      Dielectric ceramics have gained wide attention owing to their applicability in a broad range of domains including a microwave communication system. Silicates are considered as the prospective substrate materials for microwave circuitsdue to their properties complementing with the requisites of a microwave substrate. Lightweight lithium-based silicate ceramic namely lithium magnesium silicate (Li$_2$MgSiO$_4$, LMS) was prepared by a solid-state reaction method. Zinc oxide (ZnO) was used as an additive to LMS in different weight percentages (0.5, 1.0, 1.5 and 2.0) and LMS-ZnO ceramics were also prepared. The microwave dielectric properties of pure LMS and ZnO-added LMS were measured and the influence of ZnO on LMS was investigated. A dielectric resonance technique was utilized to study the dielectric properties of ceramic samples at 12 GHz. A comparatively higher quality factor of 24,000 GHz was attained by the LMS-ZnO (2wt%) system with a relative density of 90.2% and <10 dielectric constant of 5.76 making it suitable for substrate applications.

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