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- Title
Local Probing ErCrO 3.
- Authors
Oliveira, Gonçalo N. P.; Rodrigues, Pedro R.; Correia, João G.; Araújo, João P. E.; Lopes, Armandina M. L.
- Abstract
Local distortions in perovskite-like orthochromites are of extreme importance for the properties they exhibit. Here, we present the results of structural and DC magnetisation measurements combined with local probe studies in polycrystalline ErCrO3. The electric field gradient (EFG) parameters' evolution with temperature shows two clear signals of local environment changes, one at the ferroelectric phase transition (TFE) and the other below 250 K. At the claimed TFE, the EFG changed from a slightly distorted axial symmetric to an EFG with axial symmetry (evidence that the local point-symmetry of the crystal might have changed). At a temperature around 250 K, we observed the development of a magnetic hyperfine field (MHF) and a change in the EFG to an axial slightly distorted one. These observations are rather in line with our magnetisation measurements, as a relatively strong coercive field was observed well above the Cr sub-lattice ordering temperature.
- Subjects
MAGNETIZATION measurement; PHASE transitions; FERROELECTRIC transitions; MAGNETIC fields; ELECTRIC fields
- Publication
Crystals (2073-4352), 2023, Vol 13, Issue 1, p54
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst13010054