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Q. Z. Huang

High-Pressure Structures of Hydrogen-bearing Compounds

Hydrogen constitutes more than 90% of all atoms in the visible universe and most are at extreme conditions. It has been proposed that compressed hydrogen might cross over into a metallic state and eventually become a superconductor with a high transition temperature Tc. Although metallic hydrogen in the solid form has not yet been achieved, the metallic and superconducting states were recently found in hydrogen-rich compounds.

 

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Neutron Studies on Hydrogen-rich Materials for Hydrogen Storage

Structural characterization is critical to a fundamental understanding of the mechanisms of hydrogen storage. Neutron diffraction is recognized as the only technique able to ``see'' hydrogen and other important light elements. The neutron-based techniques are very valuable in proving reliable information about the structural, thermodynamic, physical, and chemical properties of hydrogen-storage materials.

 

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Neutron Diffraction Studies on Magnetoelectric Multiferroics

Magnetism and ferroelectricity are essential to many forms of current technology. The multiferroic-based device could provide an efficient link between conventional electronic logic and spin-based logic, which offers the potential for significantly reduced energy consumption compared to present-day integrated circuits. An important number of magnetoelectric multiferroics has the general chemical formula ABO3 and crystallizes in a perovskite or perovskite-related structure.

 

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