Exploring bismuth-substituted yttrium iron garnet: Insights into structural, optical, and dielectric characteristics

• DOI: 10.1016/j.chphi.2024.100671
• Publication Date: 2024-07-04T17:20:42Z
• Authors: Ravindra Hazam; Manjushree Maity; Sachin Verma; Rajeev Singh; Biswanath Bhoi
• Keywords: Bismuth; Dielectric loss; Yttrium Iron Garnet; Optical conductivity; Debye; Debye model

Magnetic garnets, a diverse group of magnetic insulating materials, have been the subject extensive research for decades, owing to their versatility and potential wide range applications. In this study, we synthesized Bismuth-Substituted Yttrium Iron Garnet (BiY2Fe5O12: BiYIG) using solid-state reaction method explore its structural, optical, dielectric characteristics. X-ray diffraction analysis revealed attainment pure cubic garnet phase in BiYIG, with lattice parameter 12.444 Å. Using UV–visible spectroscopy, determined that optical band gap BiYIG is 2.2 eV, indicating n-type semiconductor behavior. We conducted thorough investigation properties, examining capacitance, constant, loss, conductivity, impedance, modulus, as functions frequency temperature. The impedance results relaxation at room temperature was dominated by Debye-type process, shift non-Debye-type process becoming apparent increased. Comprehensive sheds light on material's transport phenomena attributes, offering insights into applications magneto-dielectric magneto-optical domains, given high constant low promising properties. These findings position versatile material underscore suitability advanced future technological developments.