{"title":"Magnetic properties of Ni0.4Zn0.6Fe2O4 synthesized by the polyol method and its epoxy composites","authors":"Yanmin Wu, Pengli Zhu, R. Sun","doi":"10.1109/ISAPM.2011.6105685","DOIUrl":null,"url":null,"abstract":"Ni0.4Zn0.6Fe2O4 powders were prepared via a polyol method with diethylene glycol (DEG) as reaction medium. After synthesis, the particles were characterized by the X-ray diffraction (XRD), the thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectrophotometer and vibrating sample magnetometer (VSM). The XRD curve indicates that the ferrite has smaller grain size (∼5 nm) and typical spinel structure. The TGA and FT-IR results confirm the polyol molecules are adsorbed on the surface of the ferrites. The VSM result shows that the ferrite has superior saturation magnetization (−58.29 emu/g) and minor remnant magnetization (2.52 emu/g). Then, the magnetic epoxy composites were fabricated by mixing this ferrite and epoxy resin in acetone and using tetraethylene pentamine (TEPA) as a hardener. The complex permeability (μ', μ\") in the frequency of rang from 10 MHz to 1 GHz of this composites were studied by an impedance analyser (Agilent E 4991A). The measure results reveal that the real part (μ') are rising from 1.06 to 1.89 at a frequency of 100MHz with the mass fraction of the ferrite in the composite increasing from 10%–65%, and the imaginary part (μ\") rising from 0.006 to 0.221, while magnetic loss tangent (tan5) rise from 0.005 to 0.117.","PeriodicalId":6440,"journal":{"name":"2011 International Symposium on Advanced Packaging Materials (APM)","volume":"69 1","pages":"20-25"},"PeriodicalIF":0.0000,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Symposium on Advanced Packaging Materials (APM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAPM.2011.6105685","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
Ni0.4Zn0.6Fe2O4 powders were prepared via a polyol method with diethylene glycol (DEG) as reaction medium. After synthesis, the particles were characterized by the X-ray diffraction (XRD), the thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectrophotometer and vibrating sample magnetometer (VSM). The XRD curve indicates that the ferrite has smaller grain size (∼5 nm) and typical spinel structure. The TGA and FT-IR results confirm the polyol molecules are adsorbed on the surface of the ferrites. The VSM result shows that the ferrite has superior saturation magnetization (−58.29 emu/g) and minor remnant magnetization (2.52 emu/g). Then, the magnetic epoxy composites were fabricated by mixing this ferrite and epoxy resin in acetone and using tetraethylene pentamine (TEPA) as a hardener. The complex permeability (μ', μ") in the frequency of rang from 10 MHz to 1 GHz of this composites were studied by an impedance analyser (Agilent E 4991A). The measure results reveal that the real part (μ') are rising from 1.06 to 1.89 at a frequency of 100MHz with the mass fraction of the ferrite in the composite increasing from 10%–65%, and the imaginary part (μ") rising from 0.006 to 0.221, while magnetic loss tangent (tan5) rise from 0.005 to 0.117.