Improved magneto-dielectric response and dielectric characteristics of rare earth doped Ba and Co based U-type hexaferrite

• Published in: Materials chemistry and physics Vol. 316; p. 129016
• Main Authors: Sharma, Indu, Sharma, Sunil, Thakur, Prashant, Bhardwaj, Sumit, Mahajan, Munisha, Kaur, Shubhpreet, Anand, Gagan, Jasrotia, Rohit, Dahshan, A., Elsaeedy, H.I., Sharma, Pankaj, Kumar, Gagan
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2024
• Subjects: Impedance spectroscopy; Magnetic properties; ME coupling; U-type hexaferrite; ME coupling; Impedance spectroscopy; U-type hexaferrite; Magnetic properties
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2024.129016

In the present work, Ba and Co based hexaferrites, (Ba1-3xNd2x)4Co2Fe36O60, x = 0.0–0.25, with the interval of 0.05, have been synthesized via auto-combustion route method. Every sample has an R-3m symmetric hexagonal structure, according to the XRD study. The samples with 0.15 <x < 0.25 have decreasing magnetization, while below x = 0.15 doping, enhanced magnetic properties appeared. Impedance spectroscopy is employed for investigating dielectric characteristics. The sample with x = 0.15 composition at 1.5 T and 1000Hz showed maximum magnetization and a magneto-electric reaction accompanied by a magnetic coefficient of about 104.68%, which is very huge in case of hexaferrites. Therefore, these results will be fruitful in the application point of view. Therefore, with these excellent magnetic parameters, improved dielectric and magneto-electric traits, the prepared U-type hexaferrites based materials are highly beneficial for permanent magnets and switching devices. •Ba-Nd-Co hexaferrites synthesized via auto-combustion.•XRD confirms R-3m hexagonal structure for all samples.•Enhanced magnetization below x = 0.15, decreasing beyond x = 0.15.•Impedance spectroscopy unveils intriguing dielectric characteristics.