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Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Published on: October 7, 2013

Patterned anvils for high pressure measurements at low temperature.

Oliver P Welzel1, F Malte Grosche

  • 1Cavendish Laboratory, Department of Physics, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom. opw21@cam.ac.uk

The Review of Scientific Instruments
|April 5, 2011
PubMed
Summary

New metallic tracks on anvil surfaces enhance reliability for multiprobe high-pressure electrical measurements. This technique enables advanced studies of material properties under extreme conditions.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Geophysics

Background:

  • High-pressure measurements necessitate electrical leads within the sample chamber.
  • Conventional wire-based methods present challenges in reliability and experimental flexibility.

Purpose of the Study:

  • To develop improved anvil designs for multiprobe high-pressure measurements.
  • To enhance the reliability and ease of electrical transport and magnetic susceptibility measurements under hydrostatic pressure.

Main Methods:

  • Sputter-deposition of metallic tracks onto alumina and moissanite anvil surfaces.
  • Development of novel anvil designs incorporating patterned metallic tracks.
  • Testing anvil performance with electrical transport and magnetic susceptibility measurements.

Main Results:

  • The new anvil designs demonstrate improved reliability and ease of use compared to wire-based techniques.
  • Successful measurements of electrical transport properties on lead (Pb).
  • Successful measurements of magnetic susceptibility on calcium ruthenium oxide (Ca3Ru2O7) under hydrostatic conditions.

Conclusions:

  • Sputter-deposited metallic tracks on anvils offer a robust solution for multiprobe high-pressure measurements.
  • These advanced anvils facilitate novel and demanding experiments under hydrostatic pressure.
  • The developed technique broadens the scope of accessible high-pressure research in materials science and physics.