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Title: Cupric oxide inclusions in cuprous oxide crystals grown by the floating zone method

Phase-pure cuprous oxide (Cu 2O) crystals are difficult to grow since cupric oxide can form within the crystal as the crystal is cooled to ambient conditions. Vacancies are the solute which causes precipitation of macroscopic defects. Therefore, even when a mostly phase-pure single crystal is used as a feed rod, cupric oxide inclusions persist in the recrystallized solid. Control of the thermal profile during crystal growth, however, can improve phase-purity; a slow counter-rotation rate of the feed and seed rods results in fewer inclusions. Cupric oxide can be removed by annealing, which produces a factor of 540 ± 70 increase in phase-purity.
 [1] ;  [2] ;  [3] ;  [4]
  1. Temple Univ., Philadelphia, PA (United States). Dept. of Chemistry
  2. Northeastern Univ., Evanston, IL (United States). Dept. of Chemistry
  3. Northeastern Univ., Evanston, IL (United States). Dept. of Chemistry; Argonne National Lab., IL (United States). Chemical Sciences and Engineering Div.
  4. Temple Univ., Philadelphia, PA (United States). Dept. of Chemistry; Northwestern Univ., Evanston, IL (United States). Dept. of Electrical Engineering and Computer Science
Publication Date:
Grant/Contract Number:
AC02-06CH11357; AC36-08GO28308; DMR-1121262; DMR-1307698; IGERT DGE-0801685
Accepted Manuscript
Journal Name:
Science and Technology of Advanced Materials
Additional Journal Information:
Journal Volume: 16; Journal Issue: 3; Journal ID: ISSN 1468-6996
IOP Publishing
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
36 MATERIALS SCIENCE; cuprous oxide; inclusions; floating zone; oxides
OSTI Identifier: