Composite pressure cell for pulsed magnets

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.