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    题名: Electronic, Electrical, and Magnetic Behavioral Change of SiO2-NP-Decorated MWCNTs
    作者: James A. Oke;David O. Idisi;Sweety Sarma;Sabata J. Moloi;Sekhar C. Ray;Kuan Hung Chen;Anirudha Ghosh;Abhijeet Shelke;Way Faung Pong
    日期: 2019-08-26
    上传时间: 2020-07-14 12:10:13 (UTC+8)
    摘要: Silicon-oxide-nanoparticle (SiO2-NP) heteroatoms were decorated/deposited onto multiwall carbon nanotube (MWCNT) surface to tune the properties of MWCNTs for electronic and magnetic applications. To achieve this objective, SiO2-NPs and MWCNTs were prepared and suspended together into toluene and heated at <100 °C for the formation of MWCNTs/SiO2-NP nanocomposites. A change in the microstructure, electronic, electrical, and magnetic behaviors of MWCNT nanocomposites decorated/deposited with silicon content was investigated using different techniques, viz., scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy for structural, compositional, and electronic structure, while current–voltage was used for electrical properties and field-dependent magnetization and electron spin resonance techniques were used for magnetic properties. The results indicated that SiO2-NPs adhered onto MWCNTs, resulting in variation in the material conductivity with the Si-NP content. The coercivity of MWCNT nanocomposites adhered with 1.5 atom % Si-NPs (HC@40 K = 689 Oe) is higher than that of those adhered with 5.75 atom % Si-NPs (HC@40 K = 357 Oe). In general, the results provide information about the possibilities of tuning the electronic, electrical, and magnetic properties of MWCNTs by adherence of SiO2-NPs onto them. This tuning of material properties could be useful for different electronic and magnetic device applications.
    關聯: ACS Omega 4(11), p.14589−14598
    DOI: 10.1021/acsomega.9b01958
    显示于类别:[物理學系暨研究所] 期刊論文


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