期刊
ENERGIES
卷 15, 期 22, 页码 -出版社
MDPI
DOI: 10.3390/en15228386
关键词
magnetic nanoparticle; spinel ferrite; magnetic properties; Monte Carlo simulation
资金
- United Arab Emirates University UPAR project [31N393]
MnFe2O4 ferrite nanoparticle was synthesized via sol-gel method and its structural, morphology, and magnetic characteristics were investigated. The experimental and theoretical results showed that MnFe2O4 is a soft ferromagnetic material.
MnFe2O4 ferrite nanoparticle was synthesized via the sol-gel method, and structural, morphology and magnetic characteristics were investigated. X-ray diffraction analysis showed that the synthesized sample was in a single phase with a spinel-ferrite-like structure (space group Fd-3m). The scanning electron microscopy displayed homogenous spherical grains with an agglomeration of the particles. The chemical composition determined by energy-dispersive spectroscopy shows the absence of any impurities. To understand the role of magnetic interaction in MnFe2O4 spinel ferrites, the structural and magnetic properties of MnFe2O4 have been explored theoretically. Based on the first-principles methods via density functional theory and Monte Carlo simulations, the magnetic hysteresis cycle has been plotted. Using the generalized gradient and GGA-PBE approximation in the full-potential linearized augmented plane wave (FP-LAPW) method, the exchange coupling interactions between magnetic elements and local magnetic moment were evaluated. Furthermore, the theoretical magnetic properties of MnFe2O4 were found to match the experimental ones. They both revealed that MnFe2O4 is a soft ferromagnetic material. The theoretical curve of magnetization versus temperature indicates that the transition occurred at T-c = 580.0 K. This was also in good agreement with the experimental Curie temperature.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据