Micromagnetic Study on the Magnetization Reversal of Barium Hexaferrite (BaFe12O19) Thin Film

This study investigates a magnetization reversal mechanism based on the hysteresis curve of Barium Hexaferrite (BFO) thin film by micromagnetic simulation through parallel and perpendicular magnetization directions along the axes. The hexagonal shape of the BFO film was modeled with thicknesses of 5, 10, and 15 nm and a diameter size ranging from 50 to 100 nm. It was found that the coercivity field HC and the saturation field HS of the BFO film decreased as the diameter size increased and thickness decreased. It was observed that the nucleation field HN increased as the diameter size increased. An analysis of energies showed that the demagnetization energy was dominantly influenced by the diameter and thickness in comparison to the anisotropic energy. From the hysteresis curve, the switching time was also investigated. Interestingly, the switching time was faster for the thinner BFOs with a diameter under 70 nm. For particles larger than 70 nm in diameter, the switching time showed fluctuation irrespective of the BFO thickness. Based on these results, a diameter size of 70 nm is proposed as the critical size for producing the equal time for switching domain polarity. &nbsp

Micromagnetic Study on the Magnetization Reversal of Barium Hexaferrite (BaFe12O19) Thin Film

This study investigates a magnetization reversal mechanism based on the hysteresis curve of Barium Hexaferrite (BFO) thin film by micromagnetic simulation through parallel and perpendicular magnetization directions along the axes. The hexagonal shape of the BFO film was modeled with thicknesses of 5, 10, and 15 nm and a diameter size ranging from 50 to 100 nm. It was found that the coercivity field HC and the saturation field HS of the BFO film decreased as the diameter size increased and thickness decreased. It was observed that the nucleation field HN increased as the diameter size increased. An analysis of energies showed that the demagnetization energy was dominantly influenced by the diameter and thickness in comparison to the anisotropic energy. From the hysteresis curve, the switching time was also investigated. Interestingly, the switching time was faster for the thinner BFOs with a diameter under 70 nm. For particles larger than 70 nm in diameter, the switching time showed fluctuation irrespective of the BFO thickness. Based on these results, a diameter size of 70 nm is proposed as the critical size for producing the equal time for switching domain polarity

Juridical Analysis of Legal Protection for Malpractice Victims by Hospitals in Patients with Brain Stem Death Post Tonsillectomy as Regulated by Law Number 8 of 1999 Concerning Consumer Protection and Law Number 17 of 2023 Concerning Health

The aim of this study is to examine and comprehend the legal foundation and implementation of legal protection for victims of malpractice by hospitals in Indonesia. This research seeks to assess the degree to which victims of malpractice receive legal protection and hold hospitals and involved medical personnel accountable. The research methodology employed is a literature study, encompassing secondary data collection through books, law journals, research findings, and pertinent legislative documents. Various legal sources are scrutinized in this research, including Law Number 8 of 1999 on Consumer Protection and Law Number 17 of 2023 on Health. The findings reveal that there are legal frameworks providing protection for victims of malpractice, such as Law No. 44 of 2009 on Hospitals and Health Law No. 17 of 2023. Nonetheless, challenges persist in the implementation of legal protection for malpractice victims, particularly concerning the legal procedures that victims must navigate to secure compensation and accountability from hospitals or medical personnel