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Spin-dependent tunnelling in magnetite nanoparticles
10.1016/j.jmmm.2018.04.017 2018-04-09 Fe3O4 nanoparticles have been made by a co-precipitation method with an average size of 13 nm. Raman measurements show that there is also a small fraction of maghemite that is not seen in the XRD data. The saturation magnetization is high for this preparation... |
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Large magnetoresistance and relative cooling power in polycrystalline Pr0.775Sr0.225MnO3Pr0.775Sr0.225MnO3 compound
10.1016/j.jmmm.2018.04.015 2018-04-07 The effect of the phase boundary of ferromagnetic metallic and ferromagnetic insulator state (FMM-FMI) on magnetotransport and magnetocaloric properties in the Pr0.775Sr0.225MnO3Pr0.775Sr0.225MnO3 compound has been described in this study. An enhancement of m... |
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Self-assembly of multiferroic core-shell composites using DNA functionalized nanoparticles
10.1016/j.jmmm.2018.03.075 2018-04-04 Ferrite-ferroelectric core-shell nanoparticles were prepared by deoxyribonucleic acid (DNA) assisted self-assembly and the strained mediated magneto-electric (ME) interactions between the ferroic phases were studied. The nanoparticle type and size were varied... |
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An Investigation of magneto-optical Kerr effect signal by optical cavity in Glass/Co/ZnS structure
10.1016/j.jmmm.2018.04.003 2018-04-03 In this paper, by using the Kerr effect, the magnetic properties of [Glass/Co/ZnS] structure has been investigated. Initially, by co-precipitation method, zinc sulfide was prepared and then by using X-ray diffraction pattern, its structure was confirmed. In t... |
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Magnetic and dielectric properties of Nd–Mn substituted Co2Y-hexaferrites
10.1016/j.jmmm.2018.04.002 2018-04-03 Designing the new multifunctional ferromagnetic materials for multilayer chip inductor has attracted widespread interest in recent years. Co2Y strontium hexaferrites with composition of Sr2-xNdxCo2Fe12-yMnyO22 (for X = 0.00-0.1, Y = 0.00-1.0) were fabricated ... |
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Low temperature ferromagnetic properties, magnetic field induced spin order and random spin freezing effect in Ni1.5Fe1.5O4 ferrite; prepared at different pH values and annealing temperatures
10.1016/j.jmmm.2018.04.001 2018-04-03 We present the low temperature magnetic properties in Ni1.5Fe1.5O4 ferrite as the function of pH at which the material was prepared by chemical route and post annealing temperature. The material is a ferri/ferromagnet, but showed magnetic blocking and random ... |
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Heat transfer enhancement of ferrofluid inside an 90° elbow channel by non-uniform magnetic field
10.1016/j.jmmm.2018.03.070 2018-04-01 In this article, numerical studies are done to examine the effects of non-uniform magnetic field on the heat transfer of ferrofluid inside 90° elbow channel. In order to simulate the flow inside the domain, the finite volume method with the SIMPLEC algorithm ... |
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The magnetic state in the binary DyxGe1-x (x ≤ 0.02) alloy semiconductor
10.1016/j.jmmm.2018.03.072 2018-04-01 Diluted bulk magnetic alloy semiconductors DyxGe1-x (x ≤ 0.02) were prepared by a two-step fabrication procedure and studied experimentally by XRD, EDX and magnetic methods. The polycrystalline materials had the ccp (cubic closed-packed) structure of the host... |
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Large magnetostriction in chemically fabricated CoFe2O4 nanoparticles and its temperature dependence
10.1016/j.jmmm.2018.03.074 2018-03-31 Cobalt ferrite nanoparticles were synthetized by co-precipitation technique from nitrate precursors. X-ray diffraction confirms the formation of the spinel ferrite. SEM and HRTEM micrographs corroborate the formation of agglomerated nanoparticles of 8-35 nm s... |
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Magnetic and Magnetocaloric Properties in Polycrystalline La0.2La0.2Gd0.5Ba0.3MnO3 Compound
10.1016/j.jmmm.2018.03.071 2018-03-31 The detail magnetic measurements of the polycrystalline La0.2Gd0.5Ba0.3MnO3 (LGBMO) compound have been presented in this manuscript. The compound shows high value of magnetocaloric effect (MCE) (- ΔΔS = 9.1 J/kg-K at 12 K) at low temperature. The experimental... |