Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “DyH3”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on DyH3 by Materials Project

DyH3 crystallizes in the trigonal P-3c1 space group. The structure is three-dimensional. Dy3+ is bonded in a 11-coordinate geometry to eleven H1- atoms. There are a spread of Dy–H bond distances ranging from 2.13–2.48 Å. There are three inequivalent H1- sites. In the first H1- site, H1- is bonded in a trigonal planar geometry to three equivalent Dy3+ atoms. In the second H1- site, H1- is bonded in a trigonal non-coplanar geometry to three equivalent Dy3+ atoms. In the third H1- site, H1- is bonded to four equivalent Dy3+ atoms to form a mixture of distorted edge, face, and corner-sharing HDy4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on DyH3 by Materials Project

DyH3 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Dy3+ is bonded to eight H1- atoms to form a mixture of corner and edge-sharing DyH8 hexagonal bipyramids. There are two shorter (2.14 Å) and six longer (2.22 Å) Dy–H bond lengths. There are two inequivalent H1- sites. In the first H1- site, H1- is bonded in a trigonal planar geometry to three equivalent Dy3+ atoms. In the second H1- site, H1- is bonded in a linear geometry to two equivalent Dy3+ atoms.

36 MATERIALS SCIENCE↗
NASA NTRS1974

Magnetization and magnetic susceptibility of DyH3

The magnetization and differential magnetic susceptibility of powdered samples of DyH3 have been measured at 4.2 K in applied magnetic fields ranging to 9 Teslas. The differential magnetic susceptibility has also been studied in zero applied field as a function of temperature. The magnetization data are described by an equation of the form M = aB/(1 + bB + cB. The ratio a/b is a measure of the saturation magnetization and gives an effective moment of 5.12 Bohr magnetons per ion. The zero field susceptibility exhibits a maximum at T = 3.45 K, and an inflection point near 2.85 K. The susceptibility at 4.2 K has a 1/B squared dependence on the applied magnetic field for B approximately greater than 0.3 Teslas.

Flood, D. J.↗
NASA NTRS1975

Magnetization and magnetic susceptibility of DyH3

The magnetization and differential magnetic susceptibility of powdered DyH3 samples are measured at a temperature of 4.2 K in applied magnetic fields ranging up to 9 Teslas. The differential magnetic susceptibility is also investigated in the zero applied field. Magnetization is plotted as a function of field strength, and differential susceptibility is described as a function of both field strength and temperature. A saturation magnetic moment of 5.12 Bohr magnetons per ion is derived from the magnetization data, and the zero-field susceptibility measurements are found to indicate antiferromagnetic ordering below 3.45 K. The susceptibility at 4.2 K is shown to have an inverse-square dependence on field strength for values of not less than 0.3 Tesla.

Flood, D. J.↗