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Area of Science:

  • Materials Science
  • Thin Film Deposition
  • Combinatorial Methods

Background:

  • High-throughput synthesis accelerates research, with combinatorial sputtering enabling gradients in composition, temperature, and thickness.
  • However, combinatorial methods have not yet been extended to gaseous elements in thin films.

Purpose of the Study:

  • To extend combinatorial sputtering to include gradients of gaseous elements in thin films.
  • To demonstrate the feasibility of generating a nitrogen gradient in manganese telluride (MnTe) thin films.

Main Methods:

  • Utilized combinatorial sputtering with two MnTe sources, one with Argon (Ar) and the other with Ar/Nitrogen (N2) gas flow.
  • Synthesized a thin film library with an intentional nitrogen gradient across the substrate.
  • Measured the nitrogen content gradient along the sample surface.

Main Results:

  • Successfully generated a gradient of nitrogen content in MnTe thin films.
  • Observed changes in phase, composition, and optoelectronic properties correlating with nitrogen content.
  • Demonstrated that nitrogen content varies with distance from the nitrogen source.

Conclusions:

  • Gaseous element gradients can be successfully generated in thin films via sputtering.
  • This advancement expands the scope of combinatorial science for thin film research.
  • Enables accelerated discovery of materials with tailored properties.