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Composite pressure cell for pulsed magnets.

Dan Sun1, Martin F Naud1, Doan N Nguyen1

  • 1National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.

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|March 2, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel diamond-anvil pressure cell using insulating composites. This design minimizes inductive heating in high magnetic fields, enabling new material studies.

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Area of Science:

  • Condensed matter physics
  • Materials science under extreme conditions

Background:

  • High pressures and magnetic fields are crucial for studying material properties.
  • Conventional pressure cells face challenges with eddy currents induced by pulsed magnetic fields, causing heating and vibrations.
  • This limits experiments combining high pressure and pulsed magnetic fields.

Purpose of the Study:

  • To design and demonstrate a pressure cell compatible with high magnetic fields.
  • To overcome the limitations of inductive heating in pulsed magnetic fields.
  • To enable new experimental possibilities at the intersection of extreme pressure and magnetic fields.

Main Methods:

  • Fabrication of a diamond-anvil cell primarily from insulating composite materials.
  • Minimization of residual metallic components by using low-conductivity, patterned metals.
  • Testing the cell's performance in high pulsed magnetic fields at cryogenic temperatures.

Main Results:

  • The novel pressure cell successfully applied pressures up to 8 GPa.
  • No noticeable inductive heating was observed in pulsed magnetic fields up to 65 T at cryogenic temperatures.
  • The cell design allows for rapid sample and pressure adjustments.

Conclusions:

  • The insulating composite diamond-anvil cell is a viable tool for experiments under extreme pressure and high pulsed magnetic fields.
  • This advancement opens avenues for exploring novel quantum phenomena in materials.
  • The cell facilitates measurements at cryogenic temperatures (down to 500 mK) and high fields.