Quasi-epitaxial barium hexaferrite thin films prepared by a topotactic reactive diffusion process

- We fabricated epitaxial barium hexaferrite film with topotactic reactive diffusion.
- The spin-coating process uses simple solutions and is annealed under air atmosphere.
- The films exhibited good crystal orientation quality and strong magnetic anisotropy.
- This paper discussed why sometimes X-ray diffraction fails to predict magnetic anisotropy.