Dresden 2026 – wissenschaftliches Programm
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FM: Fachverband Funktionsmaterialien
FM 11: Poster Session Functional Materials
FM 11.4: Poster
Dienstag, 10. März 2026, 18:00–20:30, P4
Ferroelectricity in spin-liquid candidate TbInO3 — •Andrea Tobiassen1, Elvia Chavez1, Jiali He1, Dennis Meier1,2, and Jan Schultheiss1 — 1NTNU Norwegian University of Science and Technology, Trondheim, Norway — 2University of Duisburg-Essen, Duisburg, Germany
Hexagonal rare-earth oxides exhibit a variety of intriguing physical phenomena, ranging from rich magnetism to improper ferroelectricity. Among them, TbInO3 has recently been proposed as a spin-liquid candidate, where magnetic frustration suppresses long-range magnetic order at low temperatures. The ferroelectric properties of TbInO3 remain largely unexplored.
In this work, we synthesize TbInO3 polycrystals via a solid-state route. Phase purity is confirmed by X-ray diffraction (XRD), while Scanning Electron Microscopy (SEM) and Piezoresponse Force Microscopy (PFM) reveal a pronounced domain contrast, evidencing a topological ferroelectric domain structure typical for hexagonal oxides. High-temperature XRD indicates a Curie temperature (TC) of approximately 1630 K, corresponding to the polar P63cm to non-polar P63/mmc phase transition. Understanding the ferroelectricity in TbInO3 provides a foundation for engineering its domain structure and exploring potential magnetoelectric coupling effects.
Keywords: Hexagonal oxides; Ferroelectricity; Magnetic frustration; High-temperature XRD; Piezoresponse Force Microscopy