Effect of B-site Co substitution on the structure and magnetic properties of nanocrystalline neodymium orthoferrite synthesized by auto-combustion.

ABSTRACT: Samples of cobalt-doped neodymium orthoferrite compounds, NdCo_xFe_1-xO₃ (0.0 ≤ x ≤ 0.5) were synthesized via glycine auto-combustion between 250 and 300°C and calcined at 500°C for 2 h. X-ray diffraction showed that all compounds had an orthorhombic perovskite structure with space group Pbnm. Increasing cobalt doping gradually reduced the lattice parameters and contracted the unit cell volume. Both X-ray diffraction and scanning electron microscopy showed that the particles were spherical and in the nano-sized range (19-52 nm) with pores between grains. Vibrating sample magnetometry at room temperature indicated that NdFeO₃ has a high coercive field (1950 Oe) and cobalt substitution for iron led to a decrease in the coercive field, saturation and

SUBMITTER: Nforna EA 

PROVIDER: S-EPMC8074633 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature