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Ba2TeO: A new layered oxytelluride

Journal Article · · Journal of Solid State Chemistry
 [1];  [2];  [3];  [4];  [1];  [1];  [5];  [2]
  1. Condensed Matter Sciences Dept., Tallahassee, FL (United States)
  2. Condensed Matter Sciences Dept., Tallahassee, FL (United States); Florida State Univ., Tallahassee, FL (United States)
  3. Condensed Matter Sciences Dept., Tallahassee, FL (United States); Florida State Univ., Tallahassee, FL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Condensed Matter Sciences Dept., Tallahassee, FL (United States); Specialized Crystal Processing, Inc., Tallahassee, FL (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
For single crystals of the new semiconducting oxytelluride phase, Ba2TeO, we synthesized from barium oxide powder and elemental tellurium in a molten barium metal flux. Ba2TeO crystallizes in tetragonal symmetry with space group P4/nmm (#129), a=5.0337(1) Å, c=9.9437(4) Å, Z=2. The crystals were characterized by single crystal x-ray diffraction, heat capacity and optical measurements. Moreover, the optical measurements along with electronic band structure calculations indicate semiconductor behavior with a band gap of 2.93 eV. Resistivity measurements show that Ba2TeO is highly insulating.
Research Organization:
Florida State Univ., Tallahassee, FL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725; SC0008832
OSTI ID:
1185703
Alternate ID(s):
OSTI ID: 1333507
OSTI ID: 22443540
OSTI ID: 1246685
Journal Information:
Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: C Vol. 222; ISSN 0022-4596
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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