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6CCVD Research

Microwave acoustic studies of materials in diamond anvil cell under high pressure

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2022-11-07
JournalApplied Physics Letters
AuthorsB. P. Sorokin, Nikita O. Asafiev, D. A. Ovsyannikov, Š“. Šœ. ŠšŠ²Š°ŃˆŠ½ŠøŠ½, Mikhail Popov
InstitutionsTechnological Institute for Superhard and Novel Carbon Materials
Citations3

Abstract

Section titled ā€œAbstractā€

This paper presents an integrated measuring system combining a diamond anvil cell (DAC) and a high overtone bulk acoustic resonator (HBAR) operating at the microwave frequency band as 2.8-8.8 GHz. We have studied several metallic (W, Zr) and semiconductor (Si) samples under pressure up to āˆ¼16 GPa. As an HBAR, we have used the ā€œAl/Al0.72Sc0.28N/Mo/(100) diamondā€ structure utilizing a piezoelectric aluminum-scandium nitride film. We have observed that under pressure, the Q-factor of the HBAR decreases but remains at the value of 2500-3000, which is suitable for our experiments. It is demonstrated that the above system can be used for studying the behavior of various solids under high pressure, the pressure-induced phase transition in Zr, the registration of plastic deformations, and their relaxation in metals. Here, we discussed the phenomenon of an acoustic wave passing through a tungsten layer under a pressure of āˆ¼5.5 GPa. The integrated DAC&HBAR measuring system has demonstrated some practical advantages over known ultrasonic systems combined with the DAC as the possibility of applying a microwave operational frequency, the measurement of a Q-factor change under pressure, and the miniature size of a sensitive HBAR element. The application of the built-in DAC&HBAR system will hopefully allow more accurate studies on materials in the GPa pressure range of a DAC.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2005 - Advances in High-Pressure Technology for Geophysical Applications

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