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MFeO@SiO（M = 钴、锰、锌、镍、铜）纳米复合材料的形成、结构及磁性能

Formation, Structure and Magnetic Properties of MFeO@SiO (M = Co, Mn, Zn, Ni, Cu) Nanocomposites.

作者信息

Dippong Thomas, Levei Erika Andrea, Cadar Oana

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

Materials (Basel). 2021 Feb 28;14(5):1139. doi: 10.3390/ma14051139.

DOI:10.3390/ma14051139
PMID:33670903
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7957773/
Abstract

The formation, structure, and thermal and magnetic properties of MFeO@SiO (M = Co, Mn, Zn, Ni, Cu) (60% MFeO/40% SiO) nanocomposites produced by a modified sol-gel method, followed by annealing at 300, 600, 900 and 1200 °C, were studied. The thermal analysis and Fourier transform infrared spectroscopy showed the formation of metal-glyoxylates below 210 °C and their decomposition into the corresponding ferrite around 300 °C. The evolution of crystalline phases and variation of crystallite sizes differs from ferrite to ferrite and depends on the annealing temperature. The magnetic measurements revealed the dependence of saturation and remanent magnetization, coercivity, and anisotropy on ferrite type, annealing temperature, and particle size. By annealing the nanocomposites (NCs) at 1200 °C paramagnetic MnFeO, CoFeO, NiFeO and CuFeO and antiferromagnetic ZnFeO are obtained.

摘要

研究了通过改进的溶胶 - 凝胶法制备，随后在300、600、900和1200℃下退火的MFeO@SiO（M = Co、Mn、Zn、Ni、Cu）（60% MFeO/40% SiO）纳米复合材料的形成、结构以及热学和磁学性质。热分析和傅里叶变换红外光谱表明在210℃以下形成了金属乙二醛酸盐，并在300℃左右分解为相应的铁氧体。晶相的演变和微晶尺寸的变化因铁氧体而异，并取决于退火温度。磁性测量揭示了饱和磁化强度、剩余磁化强度、矫顽力和各向异性对铁氧体类型、退火温度和颗粒尺寸的依赖性。通过在1200℃下对纳米复合材料（NCs）进行退火，得到了顺磁性的MnFeO、CoFeO、NiFeO和CuFeO以及反铁磁性的ZnFeO。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/40882440d5e7/materials-14-01139-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/a9a57978ba9c/materials-14-01139-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/a7ebc4b89024/materials-14-01139-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/8f9520ecf710/materials-14-01139-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/5fc469f3e435/materials-14-01139-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/40882440d5e7/materials-14-01139-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/a9a57978ba9c/materials-14-01139-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/a7ebc4b89024/materials-14-01139-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/8f9520ecf710/materials-14-01139-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/5fc469f3e435/materials-14-01139-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3eb1/7957773/40882440d5e7/materials-14-01139-g005.jpg

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本文引用的文献

[1]
Influence of Cu, Ni, and Zn Ions Doping on the Structure, Morphology, and Magnetic Properties of Co-Ferrite Embedded in SiO Matrix Obtained by an Innovative Sol-Gel Route.

Nanomaterials (Basel). 2020-3-22

[2]
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

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