Results for “CeIn3” | Engineering Papers

DOE OSTI2020

Materials Data on CeIn3 by Materials Project

CeIn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ce is bonded to twelve equivalent In atoms to form CeIn12 cuboctahedra that share corners with twelve equivalent CeIn12 cuboctahedra, edges with twenty-four equivalent InCe4In8 cuboctahedra, faces with six equivalent CeIn12 cuboctahedra, and faces with twelve equivalent InCe4In8 cuboctahedra. All Ce–In bond lengths are 3.33 Å. In is bonded to four equivalent Ce and eight equivalent In atoms to form distorted InCe4In8 cuboctahedra that share corners with twelve equivalent InCe4In8 cuboctahedra, edges with eight equivalent CeIn12 cuboctahedra, edges with sixteen equivalent InCe4In8 cuboctahedra, faces with four equivalent CeIn12 cuboctahedra, and faces with fourteen equivalent InCe4In8 cuboctahedra. All In–In bond lengths are 3.33 Å.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CeIn3(CuSe2)4 by Materials Project

CeIn3(CuSe2)4 is Stannite-like structured and crystallizes in the tetragonal P-4 space group. The structure is three-dimensional. Ce3+ is bonded to four equivalent Se2- atoms to form CeSe4 tetrahedra that share corners with four equivalent InSe4 tetrahedra and corners with eight CuSe4 tetrahedra. All Ce–Se bond lengths are 2.84 Å. There are three inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four Se2- atoms to form CuSe4 tetrahedra that share corners with two equivalent CeSe4 tetrahedra, corners with four CuSe4 tetrahedra, and corners with six InSe4 tetrahedra. There are two shorter (2.45 Å) and two longer (2.47 Å) Cu–Se bond lengths. In the second Cu1+ site, Cu1+ is bonded to four equivalent Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent CuSe4 tetrahedra and corners with eight InSe4 tetrahedra. All Cu–Se bond lengths are 2.44 Å. In the third Cu1+ site, Cu1+ is bonded to four equivalent Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent CeSe4 tetrahedra, corners with four equivalent CuSe4 tetrahedra, and corners with four equivalent InSe4 tetrahedra. All Cu–Se bond lengths are 2.45 Å. There are two inequivalent In3+ sites. In the first In3+ site, In3+ is bonded to four Se2- atoms to form InSe4 tetrahedra that share corners with two equivalent CeSe4 tetrahedra, corners with two equivalent InSe4 tetrahedra, and corners with eight CuSe4 tetrahedra. All In–Se bond lengths are 2.66 Å. In the second In3+ site, In3+ is bonded to four equivalent Se2- atoms to form InSe4 tetrahedra that share corners with four equivalent InSe4 tetrahedra and corners with eight CuSe4 tetrahedra. All In–Se bond lengths are 2.68 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to one Ce3+, two Cu1+, and one In3+ atom to form corner-sharing SeCeInCu2 tetrahedra. In the second Se2- site, Se2- is bonded to two Cu1+ and two In3+ atoms to form corner-sharing SeIn2Cu2 tetrahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2023

Magnon Dispersion in CeIn3

This dataset contains measurements of the low-energetic magnetic excitations in the heavy-fermion material CeIn3. Neutron spectroscopy data were recorded on a single-crystal mosaic of around 2 g total mass at the spectrometer CNCS. In a first row of measurements with incident neutron energy 12 meV the excitations were mapped out in major parts of the first Brillouin zone. In a second row of measurements with 3.315 meV incident neutron energy, the gapless and relatively steep dispersion in the vicinity of the R-point, corresponding to (1/2,1/2,1/2) in reciprocal space, was investigated.

excitations↗