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Search Publications by

Hayden Evans (Fed)

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Displaying 1 - 6 of 6

Neutron Scattering Studies of Materials for Hydrogen Storage

August 28, 2021
Ryan Klein, Hayden Evans, Benjamin Trump, Terrence J. Udovic, Craig Brown
Hydrogen storage presents a significant barrier to the widespread adaptation of hydrogen as an energy source in mobile and stationary applications. The development of new candidate hydrogen storage materials is therefore an outstanding goal in the field of

Ambient-Temperature Hydrogen Storage via Vanadium(II)-Dihydrogen Complexation in a Metal-Organic Framework

April 28, 2021
David Jaramillo, Henry Jiang, Hayden Evans, Romit Chakraborty, Hiroyasu Furukawa, Craig Brown, Martin Head-Gordon, Jeffrey Long
The widespread implementation of H2 as a fuel is currently hindered by the high pressures or cryogenic temperatures required to achieve reasonable storage densities. In contrast, the realization of materials that strongly and reversibly adsorb hydrogen at

Peritectic Phase Transition of Benzene and Acetonitrile into a Cocrystal Relevant to Titan, Saturn's Moon

November 14, 2020
Christina A. McConville, Yunwen Tao, Hayden Evans, Benjamin Trump, Jonathan B. Lefton, Wenqian Xu, Andrey A. Yakovenko, Elfi Kraka, Craig Brown, Tomce Runcevski
Benzene and acetonitrile are two of the most commonly used solvents found in almost every chemical laboratory. Titan, Saturn's icy moon, is one other place in the Solar system that has even larger amounts of these compounds, together with many other

Dynamics of Hydroxyl Anions Promotes Lithium Ion Conduction in Antiperovskite Li 2 OHCl

October 13, 2020
Fei Wang, Hayden Evans, Kwangnam Kim, Liang Yin, Yiliang Li, Ping-Chun Tsai, Jue Liu, Saul H. Lapidus, Craig Brown, Donald J. Siegel, Yet-Ming Chiang
Li2OHCl is an exemplar of the anti-perovskite family of ionic conductors, for which high ionic conductivities have been reported, but in which the atomic-level mechanism of ion migration is unclear. The stable phase is highly defective, having 1/3 of the

Magnetic Properties of (Fe 1-x Mn x ) 2 AlB 2 and the Impact of Substitution on the Magnetocaloric Effect

August 6, 2020
D. Potashnikov, Elad Nisan NMN Caspi, A. Pesach, S. Kota, M. Sokol, L. A. Hanner, M. W. Barsoum, Hayden Evans, A. Eyal, A. Keren, O. Rivin
In this work, we investigate the magnetic structures of (Fe1−xMnx)2AlB2 solid-solution quaternaries in the x = 0 to 1 range using X-ray and neutron diffraction, magnetization measurements, and mean field theory calculations. While Fe2AlB2 and Mn2AlB2 are

Perovskite-Related ReO 3 -Type Structures

March 1, 2020
Hayden A Evans, Yue Wu, Ram Seshadri, Anthony K. Cheetham
ReO3-type structures can be described as ABX3 perovskites in which the A-cation site is unoccupied. They therefore have the general composition BX3, where B is normally a cation and X is a bridging anion. The chemical diversity of such structures is very