The hexaferrite Sr3Co2Fe24O41 thin films by chemical solution deposition method: Synthesis and characterization

Abstract Thin films of Sr 3 Co 2 Fe 24 O 41 hexaferrite were prepared through the chemical solution deposition method using SrTiO 3 (1 1 1) single crystal substrates. The influence of the annealing temperature and annealing duration time on the phase composition, structural, microstructural and magnetic properties was investigated by examining the out- and in-plane crystallographic orientation, temperature and magnetic-field dependence of the magnetization, and surface topography. The Rietveld analysis performed on the XRD patterns indicates Sr 3 Co 2 Fe 24 O 41 being the dominant phase, according to the XRD texture analysis the orientation relationship between Z ferrite and substrate can be expressed as (0 0  l ) Z || (1 1 1) STO || and [1 1 0] Z || [1 0 0] STO . The magnetization data show anomalies in the magnetic behavior occurring at temperatures close to the room temperature that are characteristic for collinear to non-collinear spin structure transitions. The magnetic-field dependence of the magnetization proves soft magnetic character of ferrite film together with pronounced magnetic anisotropy, and shows a two-step increase of magnetization at lower fields (≤1 T) before it becomes almost saturated at around 2 T.