Articles
  • Structural and microwave dielectric properties of Ba6-3xGd8+2xTi18O54 solid-solutions
  • S.Bindra Naranga,*, Dalveer Kaura and Kulwant Singh Thindb
  • a Department of Electronics Technology, Guru Nanak Dev University, Amritsar-143005, Punjab, India b Department of Physics, Guru Nanak Dev University, Amritsar-143005, Punjab, India
Abstract
Ba6-3xGd8+2xTi18O54 (x = 0.0, 0.2 ≤ x ≤ 0.7) composites have been synthesized by employing a solid-state reactive sintering technique and studied from the point of view of microwave dielectric materials. In this series, formation of solid solutions was found, which was deduced from the linear change of the lattice parameters of the unit cells. Unit-cell parameters (Å) have been obtained with the help of the X-Ray powder diffraction (XRD) technique. Multi-phase microstructures have been observed for all the compositions using Scanning electron microscopy (SEM). We found good quality microwave materials which show a high dielectric constant (ε') of 70 and a low loss tangent (tanδ) of 0.006336 at 3 GHz. A minimum value of the A.C. dielectric conductivity (σa.c.) was 2.32E-12 mho/cm at 0.8 GHz.

Keywords: X-Ray Diffraction, Perovskite, Unit-cell parameters, Dielectric properties, Dielectric conductivity.

This Article

  • 2009; 10(5): 595-599

    Published on Oct 31, 2009