Synthesis, characterization and microwave properties of strontium hexaferrite thin films prepared by chemical bath deposition

• Published in: Applied surface science 2013-01, Vol.265, p.475-479
• Main Authors: Ruikar, Deepti V., Kashid, P.B., Patil, V.R., Puri, Vijaya
• Format: Article
• Language: English
• Subjects: Chemical bath deposition; Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization; Cold working, work hardening; annealing, quenching, tempering, recovery, and recrystallization; textures; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Crystal structure; Deposition; Exact sciences and technology; Ferrimagnetics; Heating; Hexaferrite thin films; Magnetic properties and materials; Materials science; Microwave transmittance; Microwaves; Physics; Strontium; Structure and morphology; thickness; Studies of specific magnetic materials; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Synthesis; Thin film structure and morphology; Thin films; Transmittance; Treatment of materials and its effects on microstructure and properties
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2012.11.031

▸ Strontium hexaferrite thin films were successfully deposited on alumina by chemical bath deposition technique for the first time. ▸ For the first time it was observed that, the highly dense (synthesis pH 10) strontium hexaferrite thin films can be used as microwave transmitting material. ▸ These thin films also have very high microwave dielectric constant and very low loss. Strontium hexaferrite thin films were deposited on alumina by chemical bath deposition technique. The thin films formed with different synthesis pH were annealed by microwave heating. The effect of variation of pH of the solution during synthesis on the structural, morphological and microwave properties was studied by X-ray diffraction, scanning electron microscopy, waveguide reflectometer and slotted section technique. The strontium hexaferrite thin films synthesized at pH 10 show highly dense surface morphology and hence, high microwave transmittance of ∼65% in the 8–12GHz frequencies. With further increase in transmittance by tailoring the permittivity and permeability, these strontium hexaferrite thin films can be used as microwave transmitting material.