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锰铁氧体的结构、形态和磁性性能对镍-锰取代的依赖性。

Dependence of Structural, Morphological and Magnetic Properties of Manganese Ferrite on Ni-Mn Substitution.

机构信息

Faculty of Science, Technical University of Cluj-Napoca, 76 Victoriei Street, 430122 Baia Mare, Romania.

INCDO-INOE 2000, Research Institute for Analytical Instrumentation, 67 Donath Street, 400293 Cluj-Napoca, Romania.

出版信息

Int J Mol Sci. 2022 Mar 13;23(6):3097. doi: 10.3390/ijms23063097.

DOI:10.3390/ijms23063097
PMID:35328516
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8949668/
Abstract

This paper presents the influence of Mn substitution by Ni on the structural, morphological and magnetic properties of MnNiFeO@SiO (x = 0, 0.25, 0.50, 0.75, 1.00) nanocomposites (NCs) obtained by a modified sol-gel method. The Fourier transform infrared spectra confirm the formation of a SiO matrix and ferrite, while the X-ray diffraction patterns show the presence of poorly crystalline ferrite at low annealing temperatures and highly crystalline mixed cubic spinel ferrite accompanied by secondary phases at high annealing temperatures. The lattice parameters gradually decrease, while the crystallite size, volume, and X-ray density of MnNiFeO@SiO NCs increase with increasing Ni content and follow Vegard's law. The saturation magnetization, remanent magnetization, squareness, magnetic moment per formula unit, and anisotropy constant increase, while the coercivity decreases with increasing Ni content. These parameters are larger for the samples with the same chemical formula, annealed at higher temperatures. The NCs with high Ni content show superparamagnetic-like behavior, while the NCs with high Mn content display paramagnetic behavior.

摘要

本文研究了 Mn 被 Ni 取代对通过改进溶胶-凝胶法制备的 MnNiFeO@SiO（x=0、0.25、0.50、0.75、1.00）纳米复合材料（NCs）的结构、形态和磁性的影响。傅里叶变换红外光谱证实了 SiO 基质和铁氧体的形成，而 X 射线衍射图谱表明，在较低的退火温度下存在非晶态铁氧体，在较高的退火温度下存在高度晶态混合立方尖晶石铁氧体和次要相。晶格参数逐渐减小，而 MnNiFeO@SiO NCs 的晶粒尺寸、体积和 X 射线密度随着 Ni 含量的增加而增加，并遵循维加德定律。饱和磁化强度、剩余磁化强度、方形比、单位分子式磁矩和各向异性常数增加，而矫顽力随着 Ni 含量的增加而减小。对于具有相同化学式、在较高温度下退火的样品，这些参数更大。高 Ni 含量的 NCs 表现出超顺磁性行为，而高 Mn 含量的 NCs 表现出顺磁性行为。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/6c2a5931f7d9/ijms-23-03097-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/d238ce178227/ijms-23-03097-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/a9f2f19bdd3e/ijms-23-03097-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/4d99818c8020/ijms-23-03097-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/6c2a5931f7d9/ijms-23-03097-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/d238ce178227/ijms-23-03097-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/a9f2f19bdd3e/ijms-23-03097-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/4d99818c8020/ijms-23-03097-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fe0b/8949668/6c2a5931f7d9/ijms-23-03097-g004.jpg

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本文引用的文献

[1]
Manganese Ferrite Nanoparticles Encapsulated into Vitamin E/Sphingomyelin Nanoemulsions as Contrast Agents for High-Sensitive Magnetic Resonance Imaging.

Adv Healthc Mater. 2021-11

[2]
Recent Advances in Synthesis and Applications of MFeO (M = Co, Cu, Mn, Ni, Zn) Nanoparticles.

Nanomaterials (Basel). 2021-6-13

[3]
Aqueous Sol-Gel Synthesis of Different Iron Ferrites: From 3D to 2D.

Materials (Basel). 2021-3-22

[4]
Dependence of the Magnetization Process on the Thickness of FePd Nanostructured Thin Film.

Materials (Basel). 2020-12-18

[5]
Magnetic Properties of Electrospun Magnetic Nanofiber Mats after Stabilization and Carbonization.

Materials (Basel). 2020-3-27

[6]
Impact of Co Substitution on Microstructure and Magnetic Properties of CoZnFeO Nanoparticles.

Nanomaterials (Basel). 2019-11-11

[7]
Tuning bandgap and surface wettability of NiFeO driven by phase transition.

Sci Rep. 2018-1-22

[8]
Effects of Solvent Diols on the Synthesis of ZnFe₂O₄ Particles and Their Use as Heterogeneous Photo-Fenton Catalysts.

Materials (Basel). 2014-9-3

[9]
Structural behavior of laser-irradiated γ-FeO nanocrystals dispersed in porous silica matrix : γ-FeO to α-FeO phase transition and formation of ε-FeO.

Sci Technol Adv Mater. 2016-9-29

[10]
Studies on the efficient dual performance of MnNiFeO spinel nanoparticles in photodegradation and antibacterial activity.

J Photochem Photobiol B. 2016-12

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