Covalency a Pathway for Achieving High Magnetisation in TMFe2O4Compounds

@article{Assadi2019CovalencyAP,
  title={Covalency a Pathway for Achieving High Magnetisation in TMFe2O4Compounds},
  author={Mohammad Hussein Naseef Assadi and Hiroshi Katayama‐Yoshida},
  journal={Journal of the Physical Society of Japan},
  year={2019}
}
The interplay between covalency and magnetism is non-trivial and can be harnessed for designing new functional magnetic materials. Based on a survey using density functional calculations, we show that $TM\unicode{x2013}O$ bond covalency can increase the total magnetic moment of spinel compounds of $TMFe_2O_4$ composition ($TM = V-Ni, Nb-Pd$) which are isomorphic to the much-researched magnetite. Accordingly, $PdFe_2O_4$ was found to exhibit the highest magnetic moment of 7.809 ${\mu}_B$ per… 

Figures and Tables from this paper

Stability Trends in Mono-Metallic 3d Layered Double Hydroxides

Layered double hydroxides (LDHs) constitute a unique group of 2D materials that can deliver exceptional catalytic, optical, and electronic performance. However, they usually suffer from low stability

Na site doping a pathway for enhanced thermoelectric performance in Na1−xCoO2; the case of Gd and Yb dopants

  • M. Assadi
  • Materials Science
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2019
It is demonstrated that in an oxygen poor environment, Gd and Yb dopants reside in the Na layer while in a oxygen rich environment these dopants replace a Co in CoO2 layer, demonstrating how thermoelectric performance critically depends on the synthesis environment that must be fine-tuned for achieving any thermoelectedric enhancement.

Exceptionally high saturation magnetisation in Eu-doped magnetite stabilised by spin-orbit interaction.

It is demonstrated that Eu, which is most stable when doped at the tetrahedral site, adapts a spin almost opposite the substituted Fe, which exhibits a maximum saturation magnetisation which is significantly larger than that of undoped magnetite.

Synthesis, structural and dielectric characterization of NiFe2O4 nanoparticles

  • S. ShahinaS. Vidya
  • Materials Science
    INTERNATIONAL CONFERENCE ON RECENT TRENDS IN THEORETICAL AND APPLIED PHYSICS: ICRTTAP
  • 2021
Nanocrystalline NiFe2O4, a promising material for temperature sensitive applications and in the field of electronics, has been synthesized by modified combustion technique. Structural analysis of the

Photocatalytic Degradation of Cefixime Trihydrate by Bismuth Ferrite Nanoparticles

Degradation of cefixime trihydrate was investigated under sunlight to evaluate the photocatalytic properties of the bismuth ferrite nanoparticles, and it was found that the BFO nanoparticles followed first-order degradation kinetics in solar irradiation in the degradation of antibiotic, cefxime triHydrate.

References

SHOWING 1-2 OF 2 REFERENCES

Introduction to Magnetic Oxides

Oxides are ubiquitous. The Earth’s crust and mantle are largely made up of compounds of metal cations and oxygen anions. Looking at the composition of the crust in Figure 1.1, we see that oxygen is