To widen the scope of ferrites

Try to explore binary or ternary ferrites, hexaferrites

Try to explore synthesis aspect of ferrites (different shapes, size, pores, specific surface areas)

Applications to explore, try electrocatalysis, EMI shielding and energy storage. These applications are emerging fields

For your PhD, consider topics related to ferrites and Photocatalytic properties, such as

recent advances in ferrite nanomaterials as photocatalysts for the environment,

ferrites-based photocatalysts in the application of hydrogen production,

The underlying physics and chemistry of ferro-photocatalysis.

Thin films based on spinel ferrites,

nanocomposites of ferrites with TiO2, SiO2, and carbon quantum dots,

the fundamental physics and chemistry of ferrites, as well as the synthesis, properties, and applications of ferrites.