Nonlinear Properties in Langasite Isomorphs for Advanced Frequency Control Devices and Clocks

Abstract

Precision oscillators are an enabling technology for precision-guided munitions, slow-moving target detection and identification from moving platforms, and rapid signal acquisition in jamming environments. Quartz has been exclusively used for resonators, which are essential components in such oscillators. Most recently, langasite and its isomorphs (LGX) have been advanced as potential substitutes for quartz, owing to their extremely high quality (Q) factors. A higher Q value, by at least 2.5 times, than that of quartz has been reported. A high Q value translates into a potentially greater stability. In order to make such materials practical, the environmental sensitivities must be addressed. In this paper, some of the nonlinear properties we have characterized over the past years are summarized.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2006
Accession Number
ADA481616

Entities

People

  • Yoonkee Kim

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Acoustics
  • Climate Change
  • Crystal Lattices
  • Crystals
  • Frequency
  • Frequency Shift
  • High Temperature
  • Materials
  • Phase Transformations
  • Piezoelectric Crystals
  • Quartz Resonators
  • Resonant Frequency
  • Resonators
  • Surface Acoustic Waves
  • Transition Temperature
  • Waves

Readers

  • Nanofabrication and Microfabrication.
  • Sensor Fusion and Tracking Systems.
  • Systems Analysis and Design