Comparison of the microstructure and magnetic properties of strontium hexaferrite films deposited on Al_2O_3(0001), Si(100)/Pt(111) and Si(100) substrates by pulsed laser technique

摘要

Strontium hexaferrite SrFe_(12)O_(19) (SrM) films have been deposited on Al_2O_3(0001), Si(100)/Pt(111) and Si(100) substrates. The (001) oriented SrFe_(12)O_(19) films deposited on the Al_2O_3(0001) and Si(100)/Pt(111) substrates have been confirmed by X-ray diffraction patterns. Higher coercivity in perpendicular direction rather than in-plane direction of the SrM/Al_2O_3(0001) and SrM/Pt(111) films showed that the films had perpendicular magnetic anisotropy. The (001) orientation and similar microstructure and magnetic properties of the SrM/Al_2O_3(0001) and SrM/Pt(111) films show the Al_2O_3(0001) substrate can be replaced by the Si(100)/Pt(111) substrate.