Preparation and Characterization of Cu2ZnGeS4-ySey

Abstract

Copper Zinc Germanium Selenide can be prepared in both tetragonal stannite and orthorhombic wurtz-stannite phases, whereas Cu2ZnGeSe4 only exists in the tetragonal phase. Selenium can be substituted for sulfur up to 100% in the tetragonal structure of Cu2ZnGeS(4-y)Se(y) prepared at 700 C, and up to 75% in the orthorhombic structure prepared at 900 C. The temperature at which the phase transformation takes place was found to increase with higher selenium concentration. Iron was substituted into both forms of Cu2Zn(1-x)Fe(x)GeS(4-y) Se(y) and the resulting magnetic properties indicated that the FeFe superexchange interactions are the same in both structures. Keywords: Chalcogenides.

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Document Details

Document Type
Technical Report
Publication Date
Jan 15, 1990
Accession Number
ADA217469

Entities

People

  • Aaron Wold
  • K. Doverspike
  • Kirby Dwight

Organizations

  • Brown University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Chemistry
  • Diffraction
  • Elements
  • Germanium Compounds
  • High Temperature
  • Low Temperature
  • Magnetic Properties
  • Materials
  • Military Research
  • Phase
  • Phase Transformations
  • Security
  • Temperature Gradients
  • Transition Temperature
  • Transitions
  • Universities
  • X Rays

Fields of Study

  • Materials science

Readers

  • Organic Chemistry
  • Thin Film Deposition Science.