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Title: Fabrication of diamond based sensors for use in extreme environments

Electrical and magnetic sensors can be lithographically fabricated on top of diamond substrates and encapsulated in a protective layer of chemical vapor deposited single crystalline diamond. This process when carried out on single crystal diamond anvils employed in high pressure research is termed as designer diamond anvil fabrication. These designer diamond anvils allow researchers to study electrical and magnetic properties of materials under extreme conditions without any possibility of damaging the sensing elements. We describe a novel method for the fabrication of designer diamond anvils with the use of maskless lithography and chemical vapor deposition in this paper. This method can be utilized to produce diamond based sensors which can function in extreme environments of high pressures, high and low temperatures, corrosive and high radiation conditions. Here, we demonstrate applicability of these diamonds under extreme environments by performing electrical resistance measurements during superconducting transition in rare earth doped iron-based compounds under high pressures to 12 GPa and low temperatures to 10 K.
 [1] ;  [1] ;  [1]
  1. Univ. of Alabama at Birmingham, Birmingham, AL (United States)
Publication Date:
OSTI Identifier:
Grant/Contract Number:
Accepted Manuscript
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Additional Journal Information:
Journal Volume: 8; Journal Issue: 5; Journal ID: ISSN 1996-1944
Research Org:
Univ. of Alabama at Birmingham, Birmingham, AL (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
36 MATERIALS SCIENCE diamond anvils; chemical vapor deposition; superconductor; diamond based sensors