Crystal Growth, Structure, and Magnetism of the 2D Spin 1/2Triangular Lattice Material Rb3Yb(PO4)2

Shu Guo, Ruidan Zhong, Karolina Górnicka, Tomasz Klimczuk, R. J. Cava

Research output: Contribution to journalArticlepeer-review

Abstract

The single-crystal growth, crystal structure, heat capacity, and anisotropic magnetization characterization of Rb3Yb(PO4)2, a Yb-based triangular lattice material, are presented. Single-crystal X-ray diffraction shows that Rb3Yb(PO4)2 exhibits [Yb(PO4)]∞ layers, with the Yb in an ordered plane of equilateral triangles. One phosphate group oxygen that is not a near neighbor of the magnetic Yb displays positional disorder. The temperature-dependent magnetization is anisotropic, with no long-range magnetic ordering observed for temperatures down to 50 mK. The low temperature heat capacity in the presence of an applied magnetic field is fitted very well by a Schottky anomaly with a linear magnetic-field-dependent gap between the ground and excited state energies. At 1.8 K, no magnetic transitions are seen for applied fields up to 90 kOe. Our results suggest that Rb3Yb(PO4)2 is a good candidate for displaying frustrated magnetism at low temperatures.

Original languageEnglish (US)
Pages (from-to)10670-10677
Number of pages8
JournalChemistry of Materials
Volume32
Issue number24
DOIs
StatePublished - Dec 22 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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