Structural, dielectric and transport properties of NaxFe1/2Mn1/2O2 (x = 1 and 2/3)† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3ra02570e

ABSTRACT: NaxFe1/2Mn1/2O2 (x = 1 and 2/3) layered oxides were prepared by an improved solid-state synthesis method. The XRD analysis confirmed the high purity of these samples. The Rietveld refinement of the crystalline structure illustrated that the prepared materials crystallize in a hexagonal system in the R3̄m space group with the P3 structure for x = 1 and in a rhombohedral system with the P63/mmc space group and P2 structure type for x = 2/3. The vibrational study undertaken using IR and Raman spectroscopy techniques yielded the existence of an MO6 group. Their dielectric properties were determined in frequency range 0.1–107 Hz for a temperature range 333–453 K. The permittivity results indicated the presence of two types of polarization, namely dipolar polarization and space charge polarizati

SUBMITTER: Missaoui F 

PROVIDER: S-EPMC10263100 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature