TY - JOUR
T1 - Synthesis, structure, and electrical resistivity of Cs 3U 18Se 38
AU - Oh, George N.
AU - Ibers, James A.
N1 - Funding Information:
The work presented was supported by the U.S. Department of Energy, Basic Energy Sciences, Chemical Sciences, Biosciences, and Geosciences Division and Division of Materials Science and Engineering Grant ER–15522. SEM analyses were conducted in the Electron Probe Instrumentation Center (EPIC) at the Northwestern University Atomic and Nanoscale Characterization Experimental (NUANCE) Center, supported by NSF-NSEC, NSF-MRSEC, Keck Foundation, the State of Illinois, and Northwestern University. Crystallographic data were collected at the IMSERC X-ray Facility at Northwestern University, supported by the International Institute of Nanotechnology (IIN). Use was made of the Magnet and Low Temperature facility operated by the NSF-supported Northwestern University Materials Research Center. Appendix A
PY - 2012/8
Y1 - 2012/8
N2 - Cs 3U 18Se 38 was synthesized by the solid-state reactions of U, Se, CsCl or Cs 2Se 3, and P or As at 1273 K. This compound crystallizes in a new structure in the tetragonal space group D 18 4h-I4/mcm. The asymmetric unit contains U atoms in four different coordination environments. The overall three-dimensional network structure contains channels along the c axis, in which the Cs atoms lie. The formula Cs 3U 18Se 38 does not charge balance with the typical formal oxidation states of the elements. Electrical resistivity measurements conducted on a single crystal reveal a broad feature at 225 K, atypical semiconductor behavior below 57 K, and a calculated band gap of 0.0030(1) eV.
AB - Cs 3U 18Se 38 was synthesized by the solid-state reactions of U, Se, CsCl or Cs 2Se 3, and P or As at 1273 K. This compound crystallizes in a new structure in the tetragonal space group D 18 4h-I4/mcm. The asymmetric unit contains U atoms in four different coordination environments. The overall three-dimensional network structure contains channels along the c axis, in which the Cs atoms lie. The formula Cs 3U 18Se 38 does not charge balance with the typical formal oxidation states of the elements. Electrical resistivity measurements conducted on a single crystal reveal a broad feature at 225 K, atypical semiconductor behavior below 57 K, and a calculated band gap of 0.0030(1) eV.
KW - Cesium uranium selenide
KW - Charge balance
KW - Single-crystal X-ray structure
KW - Single-crystal electrical resistivity
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U2 - 10.1016/j.jssc.2012.02.035
DO - 10.1016/j.jssc.2012.02.035
M3 - Article
AN - SCOPUS:84864153605
VL - 192
SP - 81
EP - 86
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
ER -