access icon free Synthesis and magnetic properties of Fe-doped CdS nanorods

Hexagonal CdS and Fe-doped CdS nanorods were synthesised by a facile hydrothermal method and characterised by X-ray diffraction, energy dispersive X-ray spectroscopy, UV–vis absorption, photoluminescence, and X-ray photoelectron spectroscopy. The magnetic properties of undoped and Fe-doped CdS nanorods were investigated at room temperature. The experimental results demonstrate that the ferromagnetism of the Fe-doped CdS nanorods differs from that of the undoped CdS nanorods. The remanence magnetisation (M r) and the coercive field (H c) of the Fe-doped CdS nanorods were 4.9 × 10−3 emu/g and 270.6 Oe, respectively, while photoluminescence properties were not influenced by doping. First-principle calculations show that the ferromagnetism in Fe-doped CdS nanocrystal arose not only from the Fe dopants but also from the Cd vacancies, although the main contribution was due to the Fe dopants.

Inspec keywords: ultraviolet spectra; photoluminescence; iron; II-VI semiconductors; cadmium compounds; visible spectra; X-ray diffraction; wide band gap semiconductors; ferromagnetic materials; nanofabrication; nanomagnetics; X-ray chemical analysis; semiconductor growth; ab initio calculations; semimagnetic semiconductors; X-ray photoelectron spectra; nanorods; remanence; vacancies (crystal); semiconductor doping; coercive force

Other keywords: first-principle calculations; UV–visible absorption; temperature 293 K to 298 K; vacancies; CdS:Fe; Fe-doped CdS nanorods; X-ray photoelectron spectroscopy; hydrothermal method; X-ray diffraction; dopants; remanence magnetisation; nanocrystal; magnetic properties; coercive field; hexagonal nanorods; ferromagnetism; energy dispersive X-ray spectroscopy; photoluminescence

Subjects: Infrared and Raman spectra in inorganic crystals; Semiconductor doping; Photoelectron spectra of semiconductors and insulators; Magnetization curves, hysteresis, Barkhausen and related effects; Photoluminescence in II-VI and III-V semiconductors; Magnetic semiconductors; Doping and implantation of impurities; Visible and ultraviolet spectra of II-VI and III-V semiconductors; Luminescent materials; Optical properties of II-VI and III-V semiconductors (thin films, low-dimensional and nanoscale structures); Electromagnetic radiation spectrometry (chemical analysis); Nanometre-scale semiconductor fabrication technology; Amorphous and nanostructured magnetic materials; Magnetic properties of nanostructures; Nanofabrication using crystal growth techniques; Ferromagnetism of nonmetals; Ferromagnetic materials; II-VI and III-V semiconductors; Electron spectroscopy for chemical analysis (photoelectron, Auger spectroscopy, etc.)

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2018.5331
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