Investigation of low temperature magnetic properties of triangular lattice frustrated magnet Ba₆Er₂Ti₄O₁₇

The emergence of new rare-earth (RE)-based triangular-lattice materials has aroused significant interest due to their potential to host exotic magnetic states. Among these, the quantum spin liquid (QSL) is particularly notable, representing a highly entangled spin state that lacks long-range magnetic order even at the lowest temperatures. In this work, we have synthesized the recently reported triangular-lattice compound Ba₆Er₂Ti₄O₁₇, which crystallizes in a hexagonal structure (space group P6₃/mmc). In this compound, magnetic Er³⁺ ions form parallel triangular-lattice layers within the ab plane, stacked in an AA-type fashion along the c-axis and separated by nonmagnetic TiO₄ tetrahedra and Ti₂O₉ dimers. This distinctive structural motif offers a promising framework for investigating emergent magnetic phenomena driven by geometric frustration and strong spin–orbit coupling. In this presentation, I will discuss our recent experimental findings that reveal the intriguing magnetic properties of this triangular-lattice system.