Related Experiment Video
Updated: Oct 29, 2025
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Investigation of phase transition employing strain mapping in TT- and T-Nb2O5 obtained by HRTEM micrographs
Gustavo Henrique de M Gomes1, Rodrigo R de Andrade2, Nelcy D S Mohallem1
1Nanostructured Materials Lab, Department of Chemistry, Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - 31270-901, Belo Horizonte, Minas Gerais, Brazil.
Abstract:
This work aimed to study the crystalline structure of TT-,T-phases of Nb2O5 nanoparticles through XRD, Rietveld refinement, and HRTEM, using geometric phase analysis (GPA). The results show the presence of distorted NbO6 and NbO7 polyhedral, producing strain effects, mainly in the plane boundaries and along the b-c plane. XRD and HRTEM analyses show the TT→T transition at 700 °C, with increased particle size and increased strain in the boundaries between nanoparticles. The sample calcinated at 700 °C presents segregation of the TT-(001), (100), and T-(130) planes, where the strain effect is more relevant along the [100] zone axis and between phases.
