Doping effect of rare-earth (lanthanum, neodymium and gadolinium) ions on structural, optical, dielectric and magnetic properties of copper nanoferrites

Kanna, R. Rajesh; Sakthipandi, K.; Maraikkayar, S.M. Seeni Mohamed Aliar; Lenin, N.; Sivabharathy, M.

doi:10.1016/j.jre.2018.03.033

Cited by 73 publications

(7 citation statements)

References 59 publications

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“…The magnetic saturation decreases as temperature increases, resulting in a transition from ferromagnetic to other magnetic phases. The M S values decrease gradually with increasing temperature, and the squareness ratio values are less than 1, confirming the presence of a single-domain isolated ferromagnetic phase …”

Section: Resultsmentioning

confidence: 85%

Magnetic Memory and the Promising Magnetocaloric Effect of Sn_0.6Cr_0.1Ge_0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

et al. 2023

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This study investigates the magnetic memory and magnetocaloric effects of Sn 0.6 Cr 0.1 Ge 0.3 Te solid solution synthesized by a sealed tube solid-state reaction. Sn 0.6 Cr 0.1 Ge 0.3 Te exhibits ferromagnetic order at Curie temperature (T C = 182 K) and a super spin-glass structure below the blocking temperature. The magnetic memory effect is observed below the spin-glass state, and the change in magnetic entropy is estimated for various magnetic fields. At a magnetic field strength of 60 kOe, the refrigerant capacity, relative cooling power, and the maximum change in magnetic entropy (−ΔS M ) values are measured to be 5.5 J/kg, 7.5 J/kg, and 0.107 J/kg-K, respectively. These findings indicate that the Sn 0.6 Cr 0.1 Ge 0.3 Te sample holds great promise as a candidate for applications involving the magnetic memory effect.

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Section: Resultsmentioning

confidence: 85%

Magnetic Memory and the Promising Magnetocaloric Effect of Sn_0.6Cr_0.1Ge_0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

et al. 2023

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“…[22] The impact of RE ions on the struc-tural, optical, dielectric, and magnetic properties of copper nanoferrites has been investigated through the various characterization facilities to explore the feasibility for application in magnetic devices. [23,24] Pr 3+ doped CdS quantum dot silicate glass can be synthesized by melting quenching method. The crystallization behavior and luminescent property of the Pr 3+ doped CdS silicate glass were investigated by characterization TEM, SEM, X-ray diffraction (XRD), UV-NIR, and fluorescence spectra.…”

Section: Edax Sem and Temmentioning

confidence: 99%

“…[ 22 ] The impact of RE ions on the structural, optical, dielectric, and magnetic properties of copper nanoferrites has been investigated through the various characterization facilities to explore the feasibility for application in magnetic devices. [ 23,24 ]…”

Section: Properties Of Cds Nanoparticlesmentioning

confidence: 99%

Structural Properties, Energy Interaction, and Applications of CdS Nanomaterial Doped with Rare‐Earth Ions

Singh,

Pal,

Nag

et al. 2024

Macromolecular Symposia

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Spectroscopic analysis of trivalent praseodymium (Pr+3) and neodymium (Nd+3) ions have received very much interest and reveals good fluorescence efficiency in visible and near IR (NIR) region. Cadmium sulfide (CdS) nanomaterial sample doped with Pr+3 and Nd+3 ions are synthesized at room temperature by simple chemical precipitation method. The synthesized sample has been characterized by powder X‐ray diffraction studies, scanning electron microscopy, transmission electron microscopy, and energy dispersive X‐ray spectra. Absorption spectra of CdS:Nd3+ and CdS:Pr3+ nanoparticles have been recorded at room temperature. Various parameters such as interplanar spacing, micro strain, dislocation density, distortion parameter, and particle size of nanomaterial are computed. TEM and XRD analysis reveal the spherical structure of the CdS:Nd3+ and CdS:Pr3+ nanoparticles in the prepared samples. Energy interaction parameters of the CdS:Nd3+ and CdS:Pr3+ nanoparticles are computed using UV‐visible absorption spectrum. Actually, CdS nanoparticle amplifies the luminescence intensity of Pr+3, Nd+3 ions by up conversion processes. So energy transfer can be observed from CdS nanoparticles doped with Pr+3, Nd+3 ions. Therefore, the use of pump sources and diode lasers in the UV range can be used to excite these samples to work as lasers. CdS:Nd3+ and CdS:Pr3+ nanoparticles find potential application as a window material for hetero‐junction solar cell, light emitting diodes (LED), biological sensors, address decoders, gas detectors, opto‐electronic devices, etc. CdS nanomaterials are also used as pigment in paints and in engineered plastic due to their good thermal stability.

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“…Таким образом, улучшенные оптические, диэлектрические и магнитные свойства легированных редкоземельными элементами ферритов меди делают их перспективными материалами для продольных магнитных носителей записи на высокой частоте. [12] Известия вузов. Цветная металлургия Существует интерес к потенциалу боридов как высокотемпературным термоэлектрическим материалам для использования в электростанциях.…”

Section: висмутсодержащий манганит лантанаunclassified

“…В зависимости от структуры различают несколько видов ферритовых материалов: феррит-шпинели, феррит-гранаты, ортоферриты и гексаферриты. Наиболее перспективными являются магнитомягкие ферриты, которые легко намагничиваются и размагничиваются [12]. Эти ферриты имеют высокую намагниченность, тонкую петлю гистерезиса, низкое коэрцитивное поле и небольшие потери энергии.…”

Section: висмутсодержащий манганит лантанаunclassified

Topical trends in the application of rare-earth metals and their compounds in the production of magnetic and luminescent materials

Baranovskaya

Karpov

Petrova

et al. 2020

Izv.VUZ. Tsvet. Met.

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This review is devoted to the review of current trends in the use of rare-earth metals (REM) in two major scientific and technical fields – the production of magnetic and luminescent materials. The reviews show that it is REM that gives this product unique properties. The information on the content of matrix and alloying components, their influence on achieving the required characteristics of the most popular magnetic materials is systematized. The prospects of new combinations of rare-earth metals in the further progress of the production of magnetic materials for various purposes are shown. Along with the traditional cobalt-samarium and neodymium-iron-boron compositions, new magnetic materials with increased hysteresis properties and temperature-time stability have been developed, phases with variable valence have been synthesized, which are used as memory elements in information systems. The article also reviews and summarizes the results of studies in another important area of REM application – the creation of luminescent materials. Phosphors based on compounds of rare earth metals are used in the production of high-pressure mercury lamps with improved characteristics, X-ray screens, high and low pressure fluorescent lamps, screens for electron-optical converters. Narrow-band phosphors based on REM compounds are of interest for lamps used in plant growing, especially for areas with a cold climate, where year-round plant growth is possible only with the use of additional radiation sources.The trends in the synthesis of luminescent materials using various rare-earth metals and their combinations are revealed. Attention is turned to the need to use chemically pure precursors of rare-earth metals in the creation of such materials. The prospects of creating nanophosphors, as well as the improvement of synthesis methods and diagnostic methods, are noted.

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Doping effect of rare-earth (lanthanum, neodymium and gadolinium) ions on structural, optical, dielectric and magnetic properties of copper nanoferrites

Cited by 73 publications

References 59 publications

Magnetic Memory and the Promising Magnetocaloric Effect of Sn_0.6Cr_0.1Ge_0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

Magnetic Memory and the Promising Magnetocaloric Effect of Sn_0.6Cr_0.1Ge_0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

Structural Properties, Energy Interaction, and Applications of CdS Nanomaterial Doped with Rare‐Earth Ions

Topical trends in the application of rare-earth metals and their compounds in the production of magnetic and luminescent materials

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Doping effect of rare-earth (lanthanum, neodymium and gadolinium) ions on structural, optical, dielectric and magnetic properties of copper nanoferrites

Cited by 73 publications

References 59 publications

Magnetic Memory and the Promising Magnetocaloric Effect of Sn0.6Cr0.1Ge0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

Magnetic Memory and the Promising Magnetocaloric Effect of Sn0.6Cr0.1Ge0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

Structural Properties, Energy Interaction, and Applications of CdS Nanomaterial Doped with Rare‐Earth Ions

Topical trends in the application of rare-earth metals and their compounds in the production of magnetic and luminescent materials

Contact Info

Product

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Magnetic Memory and the Promising Magnetocaloric Effect of Sn_0.6Cr_0.1Ge_0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

Magnetic Memory and the Promising Magnetocaloric Effect of Sn_0.6Cr_0.1Ge_0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction