SiO嵌入对CoZnNiFeO颗粒的结构、形态、热性能和磁性能的影响。

Influence of SiO Embedding on the Structure, Morphology, Thermal, and Magnetic Properties of CoZnNiFeO Particles.

作者信息

Dippong Thomas, Levei Erika Andrea, Deac Iosif Grigore, Lazar Mihaela Diana, 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

Nanomaterials (Basel). 2023 Jan 28;13(3):527. doi: 10.3390/nano13030527.

DOI:10.3390/nano13030527

PMID:36770488

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9919696/

Abstract

(CoZnNiFeO)(SiO) samples obtained by embedding CoZnNiFeO nanoparticles in SiO in various proportions were synthesized by sol-gel process and characterized using thermal analysis, Fourier-transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, inductively coupled plasma optical emission spectrometry, and magnetic measurements. Poorly crystalline Co-Zn-Ni ferrite at low annealing temperatures (500 °C) and highly crystalline Co-Zn-Ni ferrite together with traces of crystalline FeSiO (800 °C) and SiO (tridymite and cristobalite) (1200 °C) were obtained. At 1200 °C, large spherical particles with size increasing with the ferrite content (36-120 nm) were obtained. Specific surface area increased with the SiO content and decreased with the annealing temperature above 500 °C. Magnetic properties were enhanced with the increase in ferrite content and annealing temperature.

摘要

通过溶胶 - 凝胶法合成了将CoZnNiFeO纳米颗粒以不同比例嵌入SiO₂中的(CoZnNiFeO)(SiO₂)样品，并使用热分析、傅里叶变换红外光谱、X射线衍射、透射电子显微镜、电感耦合等离子体发射光谱和磁性测量对其进行了表征。在低退火温度（500°C）下获得了结晶性较差的Co-Zn-Ni铁氧体，以及在800°C时获得了高度结晶的Co-Zn-Ni铁氧体和痕量结晶FeSiO₄，在1200°C时获得了SiO₂（鳞石英和方石英）。在1200°C时，获得了尺寸随铁氧体含量增加（36 - 120 nm）的大球形颗粒。比表面积随SiO₂含量增加而增加，在退火温度高于500°C时随退火温度降低。磁性随铁氧体含量和退火温度的增加而增强。