Controlled vapor crystal growth of : A three-dimensional quantum spin liquid candidate
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Northwestern Univ., Evanston, IL (United States). Department of Chemistry
- Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division, Advanced Photon Source (APS)
- Univ. of Chicago, Argonne, IL (United States). ChemMatCARS
- Univ. of California, Santa Barbara, CA (United States). Materials Department; Boston College, Chestnut Hill, MA (United States). Department of Physics
- Boston College, Chestnut Hill, MA (United States). Department of Physics
We report the successful bulk single-crystal growth of the hyperkagome lattice iridate Na4Ir3O8 (Na438) by vapor transport using a sealed aluminum oxide tube as a container. Crystals were characterized by magnetization, x-ray diffraction, and energy-dispersive x-ray measurements, confirming their identity and properties. Single-crystal x-ray diffraction experiments revealed superlattice peaks indexed on a propagation vector q = (1/3, 1/3, 1/3) based on the cubic substructure with cell parameter a = 8.986(1) angstrom. This superlattice is three-dimensional and fully coherent. Polarization analysis rules out spin and/or orbital order as the underlying origin of the modulation and points to long-range ordering of Na ions at the notionally disordered Na sites as a plausible origin for the observed superlattice.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725; AC02-06CH11357
- OSTI ID:
- 1435187
- Alternate ID(s):
- OSTI ID: 1434390; OSTI ID: 1437371
- Journal Information:
- Physical Review Materials, Vol. 2, Issue 4; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Electronic and structural response to pressure in the hyperkagome-lattice
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journal | August 2018 |
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