Investigation of the Effect of Various Oxide and Fluoride Additives on the Microstructure, Electronic Properties, and Phase Shifting Ability of Ba(1-x) Sr(x)TiO3

Abstract

A ceramic phase shifting device (used in phased array antenna systems) has been demonstrated using Ba(1-x)Sr(x)TiO3 (BSTO) ceramics. As a part of an effort to optimize the electronic device performance in the phase shifter, various dopants have been incorporated into BSTO. The effects of these additives on the Curie temperature, dielectric properties, tunability, hysteresis, and grain size have been investigated. The homogeneity of the doped materials has been verified using Curie-Weiss analysis. To further improve the electrical performance, some higher levels of doping have been attempted. A few of the latest results for these ceramic-ceramic composites will be presented.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1993
Accession Number
ADA271756

Entities

People

  • Eric H. Ngo
  • L. C. Sengupta
  • R. Lancto
  • R. W. Babbitt
  • S. Stowell
  • T. E. Koscica
  • W. C. Drach

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Air Force
  • Arrays
  • Barium Titanates
  • Composite Materials
  • Crystal Structure
  • Curie Temperature
  • Dielectric Permittivity
  • Dielectric Properties
  • Dielectrics
  • Engineering
  • Grain Size
  • Information Processing
  • Materials
  • Materials Science
  • Military Research
  • Phased Arrays

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Microwave Engineering.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene