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Title: Controlled vapor crystal growth of N a 4 I r 3 O 8 : A three-dimensional quantum spin liquid candidate

Journal Article · · Physical Review Materials
 [1]; ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [3];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  2. Northwestern Univ., Evanston, IL (United States). Department of Chemistry
  3. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division, Advanced Photon Source (APS)
  4. Univ. of Chicago, Argonne, IL (United States). ChemMatCARS
  5. Univ. of California, Santa Barbara, CA (United States). Materials Department; Boston College, Chestnut Hill, MA (United States). Department of Physics
  6. 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
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (38)

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