Why mostly UV-vis spectroscopy absorbance vs wavelength graph of ferrites have a wide absorbance peaks?

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Kaushik Shandilya

Dear Muhammad Shahbaz

Ferrites are materials that contain iron oxide and other metal oxides. The wide absorbance peaks observed in UV-vis spectroscopy of ferrites can be attributed to a number of factors:

Crystal structure: The crystal structure of ferrites can influence the electronic transitions that occur when the material is exposed to light. For example, spinel ferrites have a cubic crystal structure that can lead to broad absorbance peaks due to the presence of multiple crystal field splitting and transitions. In addition, the presence of defects or impurities in the crystal structure can also contribute to broadening of absorbance peaks.

Electronic structure: The electronic structure of ferrites can also affect the absorption spectrum. For example, the presence of transition metal ions with partially filled d orbitals can lead to a broad absorption band due to the many possible electronic transitions that can occur within these orbitals.

Particle size: The particle size of ferrites can also affect the absorption spectrum. When the particle size is very small (in the range of a few nanometers), the electronic transitions can be significantly broadened due to quantum confinement effects.

Stoichiometry: The stoichiometry of the ferrite can also affect the absorption spectrum. Variations in the stoichiometry can lead to the presence of impurities or defects that can broaden the absorption peaks.

Overall, the wide absorbance peaks observed in UV-vis spectroscopy of ferrites can be attributed to a combination of factors related to the crystal structure, electronic structure, particle size, and stoichiometry of the material.

Lassaad Hedhili

In general, the broad absorption peaks in the UV emission absorption spectrum of ferrites can be attributed to the complexity of their crystal structure, the magnetic coupling effect, the presence of different types of ions and the effects of particle size and concentration.