Structure, Microstructure, and Microwave Dielectric Properties of (Sr_2−xCa_x)(MgTe)O₆ Double Perovskites

Authors

Rick Ubic, Boise State UniversityFollow
Steven Letourneau, Boise State UniversityFollow
Sherin Thomas, National Institute for Interdisciplinary Science and Technology (CSIR)
G. Subodh, Univerisität Stuttgart
M. T. Sebastian, National Institute for Interdisciplinary Science and Technology (CSIR)

Document Type

Article

Publication Date

8-24-2010

Abstract

Sr_2−xCa_xMgTeO₆ (0 ≤ x ≤ 2) ceramics were prepared by the solid-state ceramic route. Structure and microstructure of the compounds were investigated using XRD, TEM, and SEM methods. The system undergoes a transition from pseudocubic tetragonal I4/m symmetry for x = 0 (Sr₂MgTeO₆) to pseudotetragonal monoclinic P2₁/n symmetry for x > 0. The dielectric properties of the ceramics were studied by the resonance method. The temperature coefficient of resonant frequency is negative throughout the series; permittivities were in the range 13.2−14.3, and quality factors varied from 27500 to 81000 (5−6 GHz).

Publication Information

Ubic, Rick; Letourneau, Steven; Thomas, Sherin; Subodh, G.; and Sebastian, M. T.. (2010). "Structure, Microstructure, and Microwave Dielectric Properties of (Sr_2−xCa_x)(MgTe)O₆ Double Perovskites". Chemistry of Materials, 22(16), 4572-4578. https://doi.org/10.1021/cm100486r