Magnetostriction studies in nano-crystalline zinc ferrite thin films by strain modulated ferromagnetic resonance

Highlights: • Nanocrystalline zinc ferrite (ZnFe₂O₄) thin films were investigated. • Magnetoelasticity was studied depending on the samples preparation temperatures. • The annealing is resulted in migration of Fe³⁺ ions from A sites to B site. • Obtained results suggest two-ion character of magnetostriction. The magnetoelastic properties of nano-crystalline zinc ferrite (ZnFe₂O₄) thin films prepared by Pulse laser deposition on amorphous fused quartz substrates have been investigated by means of the strain-modulated ferromagnetic resonance, as a function of the substrate temperature during the deposition, and as a function of the annealing temperature. Magnetoelastic constants reveal the same trends as the magnetization, showing correlation between these two parameters. The results are similar to that obtained earlier for the Y₃Fe₅O₁₂ ferrite.