Evaluation of Exchange Stiffness From Temperature-Dependent Magnetization in ZnFe 2 O 4 Thin Films

Nano-crystalline magnetic ZnFe2O4 thin films were deposited in oxygen atmosphere at different substrate temperatures (TS) on amorphous quartz substrate by pulsed laser deposition technique. The TS = 350 °C film was also annealed at different temperatures in air. X-ray diffraction patterns confirmed that all the samples were cubic spinel and the average grain size of the films increased with increa...