Magnetic composite polymers combine the properties of both magnet and which enable them to produce complex shape magnetic components. These materials have potential applications ranging microfluidics, vibration dampers, actuators, minimally invasive medical devices, because when fields are applied them, they can change precisely, quickly, consistently. Our study investigates behavior strontium ferrite particles [SrO(Fe2O3)6] suspended in polydimethylsiloxane (PDMS) under influence gravity,...

We describe how a classic electrostatics experiment can be modified to four-point probe lab experiment. Students use the technique investigate measured resistance varies as function of position electrodes with respect edge sample. By using elementary electromagnetism concepts such superposition principle, continuity equation, relation between electric field and potential, Ohm’s law, simple model is derived technique. Although introduces students ideas behind Laplace equation methods images,...

Magnetic Field Assisted Additive Manufacturing (MFAAM), 3D printing in a magnetic field, has the potential to fabricate high strength anisotropic bonded magnets. Here, 10, 35, and 54 wt% strontium ferrite magnets using polyamide 12 binder were developed by twin screw compounding process then printed via MFAAM samples zero, 0.5 Tesla (H parallel print direction bed). The hysteresis curves measured MicroSense EZ9 Vibrating Sample Magnetometer (VSM) for 3 different mount orientations of sample...

Continuous pin-hole free FA0.78Cs0.22Pb(I0.85Br0.15)3 films are deposited by gas-assisted slot-die printing under ambient conditions using DMF/DMSO based ink containing Formamdinium Acetate additive. Using a binary solvent mixture of DMF and DMSO is effective in eliminating the non-perovskite phase that occurs when alone used. Print-speed, gas flow rate chuck temperature optimized to realize homogeneous with constant bandgap (1.63 eV) over large substrates (2″ × 4″). The perovskite prepared...

Flexible materials embedded with hard magnetic particles have recently gained widespread recognition as small-scale actuators due to their capacity be a rapid and precise shape-shifting material. Strontium ferrite (SrFe12O19) been shown great candidate for such applications, since it is an inert material that, in contrast barium neodymium, also biocompatible. The preparation of done by mixing the into uncured elastomer (polydimethylsiloxane (PDMS)), liquid form, then pouring mixture mold...

To explain the magnetic behavior of plastic deformation thin films (Fe and permalloy) on an elastic substrate (nitinol), it is noted that unlike in bulk, dislocation density does not increase dramatically because dimensional constraint. As a result, resulting residual stress, even though strain hardening limited, dominates observed behavior. Thus, with field parallel to stress axis, compressive from causes decrease remanence coercivity; perpendicular coercivity. These elements have been...

Antiferromagnetic NiO is a candidate for next generation high-speed and scaled RRAM devices. Here, electronic optical properties of antiferromagnetic NiO: Fe 25% in the rock salt structure are studied compared to intrinsic NiO. From density states complex dielectric function analysis, first transition found be at lower frequency than due an impurity level being valence band maximum. The resulting effects on refractive index, reflectivity, absorption, conductivity loss Fe-doped those NiO,...

Nanosheets composed of stacked atomic layers exhibit unique magnetic, electrical, and electrochemical properties. Here, we report the effect iron substitution on structure magnetism nickel hydroxide, Ni(OH)2, nanosheets. Ni(OH)2 iron-substituted (5, 10, 20, 50 % Fe substitution) were synthesized using a rapid microwave-assisted hydrothermal process. Scanning transmission electron microscopy show materials are polycrystalline nanosheets that aggregate into micron-sized clusters. From X-ray...

To better understand Magnetic Field Assisted Additive Manufacturing (MFAAM) the effect of a magnetic field on orientation and distribution particles in molten composite was studied. Vibrating Sample Magnetometer (VSM) measurements were made Sr-ferrite/PA12 fused deposition modeling filaments different packing fraction (5 40 wt. %). The rotation sample’s moment upon application perpendicular to easy axis monitored with biaxial VSM above PA12’s softening temperature. observed transients depend...

First principles band structure calculations are employed to perform a comprehensive study of the electronic and optical properties 2H-phase XTO2 (X = Cu, Ag; T Al, Cr) delafossites, effects on those due Ag, O vacancies, as well p-type doping with magnesium. From structures, frequency-dependent real imaginary parts complex dielectric function, ϵ(ω), obtained, together refractive index, extinction coefficient, conductivity, reflectivity, absorption energy loss function. Moreover, hole...

The magnetic hysteresis and viscosity of SrO(Fe2O3)6/PA-12 filaments with 5wt% 26wt% was determined a biaxial VSM. curves indicate that manufactured samples have flow induced anisotropy an easy plane perpendicular to the filament’s cylindrical axis. Mx My signals vary field angle. is maximum in decreases factor two along macroscopic hard axis filament. nearly zero for intermediate angles.

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Claude Garrett, Patrick Holland, Wilhelmus J. Geerts, Dustin Ragan, Archana Dubey, Steve Rios, Anup K. Bandyopadhyay; Thickness dependence of the magnetic hysteresis NiFe-31% films as a function an applied isotropic in-plane stress. Appl. Phys. 15 May 2003; 93 (10): 8624–8626. https://doi.org/10.1063/1.1558242...

The phenomenal growths of information technology and related fields have warranted the development new class materials. Multifunctional oxides, magnetic-semiconductors, multiferroics smart materials are just a few examples such They needed for novel technologies as spintronics, magneto-electronics, radhard electronics, advanced microelectronics. For these technologies, particular interest some solid solutions ilmenite-hematite (IH) represented by (1-x) FeTiO3.xFe2O3 where x varies from 0 to...

In this paper, we discuss the properties of reactive radio-frequency-sputtered Fe-doped NiO thin films co-sputtered at different oxygen flow rates. The were deposited in an AJA Orion sputtering system from metallic NiFe-19 at.% targets. deposition rate was monitored before and after using a quartz crystal monitor. sample location depends strongly on O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> flow. At lower flows, increases with...

Magnetic properties of RF (Radio Frequency)-sputtered NiO and Ni0.8Fe0.2O1-δ films made at low or high oxygen (O) sputtering pressures were studied discussed. The X-ray diffraction pattern shows that all samples have a NaCl-type structure. magnetic measured as function field different temperatures using the PPMS Model-6000. All contain small moment resulting in saturation magnetisation 1–5 emu/cm3. A hysteresis curve fields below 500 oersted (Oe), high-field slope observed samples. Low-field...