用于磁性数据存储的单域硬铁磁性 M-SrFe 纳米粒子

S. Rani, S. Radhika, C.M. Padma
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引用次数: 0

摘要

采用共沉淀法制备了单域 M 型锶铁氧体纳米粒子。经 XRD 图谱测定,M-SrFe Nps 的晶粒大小为 58.1 nm。扫描电镜显微照片显示其形态为六角形。EDS 分析显示出 M-SrFe Nps 的形态。根据 VSM 表征,该样品是一种具有高矫顽力的硬磁性材料。由于具有出色的磁性,六价铁氧体通常被用于永磁材料和记录设备中。根据 UV-DRS 反射数据,利用 Kubelka-Munk 图确定带隙能为 1.95 eV。聚光分析中强度峰值最高的吸收波长为 629.9 纳米。TG-DTA 研究证实了 M-SrFe Nps 显著的热稳定性。使用四探针法计算出样品的电阻率为 0.312 Ωm。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Single-Domain Hard Ferromagnetic M-SrFe Nanoparticles for Magnetic Data Storage
Single-domain M-type Strontium Ferrite nanoparticles are prepared by the co-precipitation method. The crystallite size of the M-SrFe Nps is 58.1 nm, as determined by the XRD pattern. The SEM micrographs reveal the hexagonal morphology. M-SrFe Nps is depicted in EDS analysis. According to VSM characterization, the sample is a hard magnetic material with high coercivity. With its outstanding magnetic characteristics, hexaferrite is typically employed in permanent magnetic materials and recording devices. The band gap energy is determined to be 1.95 eV from the UV-DRS reflectance data using the Kubelka-Munk plot. The absorbed wavelength with the highest intensity peak in PL analysis is 629.9 nm. The TG-DTA investigations support the remarkable thermal stability of M-SrFe Nps. The resistivity of the sample, 0.312 Ωm is calculated using the four-probe method.
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