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Updated: Feb 3, 2026
04:51
Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
Published on: July 8, 2021
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Uranium polyhydrides at moderate pressures: Prediction, synthesis, and expected superconductivity
Ivan A Kruglov1,2, Alexander G Kvashnin3,2, Alexander F Goncharov4,5
1Dukhov Research Institute of Automatics (VNIIA), Moscow 127055, Russian Federation.
Science Advances
|October 19, 2018
Summary
Researchers discovered 14 new uranium hydride compounds, including UH7, which shows potential as a high-temperature superconductor. This finding advances the search for novel superconducting materials under high pressure.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid-State Chemistry
Background:
- Hydrogen-rich hydrides are key to discovering high-temperature superconductors.
- Superconductivity in H3S at record temperatures has spurred further research.
Purpose of the Study:
- To investigate stable uranium hydride compounds at high pressures.
- To predict new superconducting materials within the uranium-hydride system.
Main Methods:
- Utilized ab initio evolutionary crystal structure prediction.
- Performed high-pressure experiments up to 103 GPa.
Main Results:
- Identified 14 new uranium hydride compounds, including UH5, UH7, and UH9.
- Experimentally confirmed the existence of UH7, UH8, and three UH5 phases.
- Predicted UH7 as a potential high-temperature superconductor, stable at 22 GPa and even at zero pressure.
Conclusions:
- The U-H system is rich in novel compounds with potential superconducting properties.
- UH7 is a promising candidate for high-temperature superconductivity, stable under varying pressures.
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