Electromagnetic wave absorption properties of cobalt-zinc ferrite nanoparticles doped with rare earth elements

Mang, Changye; Ma, Zhijun; Luo, Jun; Rao, Mingjun; Zhang, Xin; Peng, Zhiwei

doi:10.1016/j.jre.2020.08.011

Cited by 38 publications

(8 citation statements)

References 23 publications

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“…Under these conditions, the nanocomposites showed excellent performance with a maximum reflection loss of −42.65 dB at 15.91 GHz. In addition to the above-mentioned elements, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, and Tm have been widely incorporated into ferrites and alloys for microwave absorption. − Moreover, CeO 2 and Gd(OH) 3 nanoparticles also exhibit efficient microwave absorption. , …”

Section: Technological Applicationsmentioning

confidence: 99%

Rare-Earth Doping in Nanostructured Inorganic Materials

et al. 2022

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Impurity doping is a promising method to impart new properties to various materials. Due to their unique optical, magnetic, and electrical properties, rare-earth ions have been extensively explored as active dopants in inorganic crystal lattices since the 18th century. Rare-earth doping can alter the crystallographic phase, morphology, and size, leading to tunable optical responses of doped nanomaterials. Moreover, rare-earth doping can control the ultimate electronic and catalytic performance of doped nanomaterials in a tunable and scalable manner, enabling significant improvements in energy harvesting and conversion. A better understanding of the critical role of rare-earth doping is a prerequisite for the development of an extensive repertoire of functional nanomaterials for practical applications. In this review, we highlight recent advances in rare-earth doping in inorganic nanomaterials and the associated applications in many fields. This review covers the key criteria for rare-earth doping, including basic electronic structures, lattice environments, and doping strategies, as well as fundamental design principles that enhance the electrical, optical, catalytic, and magnetic properties of the material. We also discuss future research directions and challenges in controlling rare-earth doping for new applications.

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Section: Technological Applicationsmentioning

confidence: 99%

Rare-Earth Doping in Nanostructured Inorganic Materials

et al. 2022

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“…[155] Considering EM properties of these earth elements, they can be characterized by good paramagnetism (where materials are weakly attracted by an externally applied magnetic field), saturation magnetization (i.e., an increase in applied external magnetic field H cannot increase the magnetization of the material further), large magnetocrystalline anisotropy (i.e., if it takes more energy to magnetize it in certain directions than in others), and magnetostriction (i.e., property of ferromagnetic materials which causes them to expand or contract in response to a magnetic field) because of the unique outer electronic structures. [156,157] The introduction of REEs in thermally sprayed coatings can improve the magnetic loss of materials and enhance the absorption of EM waves. It is possible to develop feedstock thermal spray materials containing REEs (patents such as EP1167565A2; [158] WO2013047589A1; [159] US9670099B2; [160] EP1642994B8 [161] ).…”

Section: Materials Doped With Rare Earth Elementsmentioning

confidence: 99%

“…[162][163][164][165] However, further enhancement in the range of properties depends on elements used in coating powder. [166] While there are numerous examples where material has been doped with REEs using techniques other than thermal spray to improve EM wave propagation characteristics, such as chemical coprecipitation [167] or hydrothermal synthesis, [156] it is also possible that doping certain REEs during thermally sprayed coatings could also help improve the EM propagation wave characteristics of materials. In an example, Bartuli, Cipri and Valente (2008) [70] used a range of complex ceramic-based composite coatings, which included lanthanum/La REE (e.g., Cr 2 O 3 þ La 0.5 Sr 0.5 MnO 3 40wt%, Cr 2 O 3 þ Al 20 wt% þ La 0.5 Sr 0.5 MnO 3 20wt%) fabricated by air plasma spraying to evaluate their tailored EM properties (essentially as absorbers in the microwave range (8)(9)(10)(11)(12)).…”

Section: Materials Doped With Rare Earth Elementsmentioning

confidence: 99%

Section: Special Considerations For Enhanced Em Wave Propagation Char...mentioning

confidence: 99%

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Thermal Spray Coatings for Electromagnetic Wave Absorption and Interference Shielding: A Review and Future Challenges

et al. 2022

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This review aims to consolidate scattered literature on thermally sprayed coatings with nonionizing electromagnetic (EM) wave absorption and shielding over specific wavelengths potentially useful in diverse applications (e.g., microwave to millimeter wave, solar selective, photocatalytic, interference shielding, thermal barrier‐heat/emissivity). Materials EM properties such as electric permittivity, magnetic permeability, electrical conductivity, and dielectric loss are critical due to which a material can respond to absorbed, reflected, transmitted, or may excite surface electromagnetic waves at frequencies typical of electromagnetic radiations. Thermal spraying is a standard industrial practice used for depositing coatings where the sprayed layer is formed by successive impact of fully or partially molten droplets/particles of a material exposed to high or moderate temperatures and velocities. However, as an emerging novel application of an existing thermal spray techniques, some special considerations are warranted for targeted development involving relevant characterization. Key potential research areas of development relating to material selection and coating fabrication strategies and their impact on existing practices in the field are identified. The study shows a research gap in the feedstock materials design and doping, and their complex selection covered by thermally sprayed coatings that can be critical to advancing applications exploiting their electromagnetic properties.

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“…Rare-earth elements have been reported to be recent additions providing spinel ferrites with promising modifications [8,9]. They count as new opportunities to make the cobalt ferrite performance optimized to be utilized in novel technological fields such as magnetic hyperthermia [10], photocatalytic activities [11], sensors [12], and electromagnetic wave absorption [13,14]. In the present work, we studied the effect of rare-earth Pr 3+ ions on the structural and magnetic properties of cobalt ferrite nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Effect of praseodymium in cation distribution, and temperature-dependent magnetic response of cobalt spinel ferrite nanoparticles

Nikmanesh¹,

Jaberolansar²,

Kameli³

et al. 2022

Nanotechnology

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This work reports cation distribution, magnetic, structural, and morphological studies of rare-earth Pr doped cobalt ferrite nanoparticles CoFe2−xPrxO4 (x=0, 0.02, 0.04, 0.06 at. %) fabricated by sol-gel auto-combustion method. X-ray diffraction analysis, Field Emission Scanning Electron Microscopy (FESEM), High Resolution Transmission Electron Microscopy (HRTEM), Selected Area Electron Diffraction (SAED), and Fourier-Transform Infrared (FTIR) microscopy were utilized to study the structural and morphological characteristics of the prepared samples. Rietveld refinement by the Material Analyses Using Diffraction (MAUD) software showed the formation of mono-phase cubic spinel structure with Fd-3m space group; however, there was a trace of impure PrFeO3 phase for the sample CoFe1.96Pr0.04O4 (x=0.06). Cation distribution was inferred from the XRD patterns using MAUD program. FESEM analysis revealed the spherical-shaped particles with dimensions close to the data extracted from XRD analysis and HRTEM images confirmed it. FTIR measurements revealed the presence of two prominent stretching vibrational modes confirming the successful formation of ferrite spinel structure. Magnetic properties of the nanoparticles were measured at two different temperatures 300 K and 10 K. For the low temperature of 10 K a high sensitive measurement method as Superconducting Quantum Interference Device (SQUID) magnetometry was used and Vibrating Sample Magnetometer (VSM) recorded the magnetic data at 300 K. Comparison of the magnetic results exhibited a significant enhancement with temperature drop due to the reduction in thermal fluctuations. Paramagnetic nature of rare-earth ions may be the main reason for MS decrement from 76 emu/g (x=0.0) to 60 emu/g (x=0.02) at 300 K. At 10 K, the estimated cation distribution played a vital role in justification of obtained magnetic results. All the obtained data showed that the synthesized magnetic nanoparticles can be implemented in permanent magnet industry and information storage fields, especially when it comes to lower temperatures.

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Electromagnetic wave absorption properties of cobalt-zinc ferrite nanoparticles doped with rare earth elements

Cited by 38 publications

References 23 publications

Rare-Earth Doping in Nanostructured Inorganic Materials

Rare-Earth Doping in Nanostructured Inorganic Materials

Thermal Spray Coatings for Electromagnetic Wave Absorption and Interference Shielding: A Review and Future Challenges

Effect of praseodymium in cation distribution, and temperature-dependent magnetic response of cobalt spinel ferrite nanoparticles

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