Crystal growth and structure of R{sub 2}Ir{sub 2}O{sub 7} (R=Pr, Eu) using molten KF

Journal Article · Thu May 03 00:00:00 EDT 2007 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2006.08.011· OSTI ID:21000638

Millican, Jasmine N ^[1]; Macaluso, Robin T ^[1]; Nakatsuji, Satoru ^[2]; Machida, Yo ^[2]; Maeno, Yoshiteru ^[2]; Chan, Julia Y ^[1]

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1. Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803 (United States)
2. Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)

Single crystals of R{sub 2}Ir{sub 2}O{sub 7} (R=Pr, Eu) have been synthesized using molten KF at 1373K. The pyrochlore compounds crystallize in a cubic space group Fd3-barm (No. 227, origin choice 2), with Z=8. At room temperature, the lattice parameters are a=10.3940(4)A, V=1122.92(7)A{sup 3} and a=10.274(3)A, V=1084.5(6)A{sup 3} for Pr{sub 2}Ir{sub 2}O{sub 7} and Eu{sub 2}Ir{sub 2}O{sub 7}, respectively. In this paper, we report the crystal growth of R{sub 2}Ir{sub 2}O{sub 7} (R=Pr, Eu) and their structure determinations from single crystal X-ray diffraction experiments at temperatures of 110, 115, and 298K.

• OSTI ID: 21000638
• Journal Information: Materials Research Bulletin, Vol. 42, Issue 5; Other Information: DOI: 10.1016/j.materresbull.2006.08.011; PII: S0025-5408(06)00343-6; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL GROWTH
CUBIC LATTICES
LATTICE PARAMETERS
MONOCRYSTALS
OXIDES
POTASSIUM FLUORIDES
PYROCHLORE
SPACE GROUPS
X-RAY DIFFRACTION