Is hexagonal InMnO3 ferroelectric?

Abstract

The presence of ferroelectricity in hexagonal (h-)InMnO3 has been highly under debate. The results of our comprehensive experiments of low-temperature (T) polarization, TEM and HAADF-STEM on well-controlled h-InMnO3 reveal that the ground state is ferroelectric with P6_3cm symmetry, but a non-ferroelectric P-3c1 state exists at high T, and can be quenched to room T. We also found that the ferroelectric P6_3cm state of h-InMnO3 exhibits the domain configuration of topological vortices, as has been observed in h-REMnO3 (RE=rare earths).

4 pages, 4 figures

References in corpus (1)

• Structural Domain Walls in Polar Hexagonal Manganites

Cited by in corpus (5)

• Aperiodic topological order in the domain configurations of functional materials
• Charged domain walls in improper ferroelectric hexagonal manganites and gallates
• Hidden order in hexagonal RMnO3 multiferroics
• Manifestion of structural Higgs and Goldstone modes in the hexagonal manganites
• Topological Semimetal features in the Multiferroic Hexagonal Manganites