Diamond anvil cell with boron-doped diamond heater for high-pressure synthesis and in situ transport measurements

Abstract

Temperature and pressure are essential parameters in the synthesis, evaluation, and application of functional materials. This study proposes the addition of a heating function to a high-pressure diamond anvil cell (DAC) with in-situ measurement probes. The proposed DAC allows for simultaneous control of temperature and pressure within the sample space and can be used to synthesize functional materials under extreme conditions. The various components, namely the heater, thermometer, and measurement probes, were fabricated with a boron-doped diamond epitaxial film and could be used repeatedly. The developed DAC was used to successfully conduct the high-pressure annealing of La(O,F)BiS2 single crystal and the high-pressure synthesis of EuFBiS2 superconductors. The proposed technique shows promise for further exploration of superconductors to broaden the research field.

A Comprehensive Review of High-Pressure Laser-Induced Materials Processing, Part I: Laser-Heated Diamond Anvil Cells

“…Another example: recent investigations have shown that certain metal hydrides are high-temperature superconductors (LaH 10 at 280 K [301,302], CaH 6 at 235 K [302,303], YH 10 at 303 K [302,304], and H 2 S at ∼203 K [305]). Some of these critical temperatures (T c ) are close to room-temperature, yet their synthesis requires HPHT processing to obtain the required structure [306]. For this reason, metal hydrides (and similar compounds) are likely to be the subject of significant future investigation via LH-DACs.…”

In Situ Measurement Techniques Using Diamond Anvil Cell at High Pressure–Temperature Conditions: A Review

“…The high transparency [23] of the diamond anvil across a broad range of long wavelengths facilitates the effortless penetration of photons of varying wavelengths into the sample. The incorporation of this feature is highly desirable for spectroscopic research and measurement because it facilitates accurate characterization of the structure and properties [24] of materials under ultra-high-pressure conditions when combined with in situ techniques [25,26] such as XRD and Raman scattering.…”

Electrical Transport Measurements on Layered La(O,F)BiS2 under Extremely High Pressure

“…Layered BiS 2 -based superconductors, represented as La(O,F)BiS 2 [1], have opened various materials science properties, such as their anomalous upper critical field [2,3], thermoelectric performance [4][5][6], topological features [7], and superconductivity on highentropy alloys [8], up for further investigation. Among them, the performance of the material at high-pressures has attracted considerable attention.…”