A schematic delineation of the work is depicted in Fig. 1. The hybrid nanofluid filling the cavity is Ag–MgO hybrid nanoparticles with water as a base fluid. The magnetic field is exerted on the entire flow domain. The characteristics of a periodic magnetic field are period 2λ and amplitude B 0. Buoyancy forces induced by the temperature ...

Setup of the periodic magnetic field modulation prototype. Periodic movement of MBs was controlled by the external magnetic field with switchable features, alternately generated by a pair of strong neodymium disc magnets (diameter 6 mm × thick 0.8 mm, Magpanda Science and Technology Ltd., Ningbo, China).

The hybrid nanofluid filling the cavity is Ag–MgO hybrid nanoparticles with water as a base fluid. The magnetic field is exerted on the entire flow domain. The characteristics of a periodic magnetic field are period 2λ and amplitude B 0. Buoyancy forces induced by the temperature difference between two opposite vertical borders are …

magnetic field: A condition in the space around a magnet or electric current in which there is a detectable magnetic force, and where two magnetic poles are present. electric field: A region of space around a charged particle, or between two voltages; it exerts a force on charged objects in its vicinity.

The Earth's magnetic field has therefore been undergoing both large and small changes throughout its history; these changes over time are known as palaeosecular variation. The movement of magnetic poles and its polarity reversal rate through time is controlled by how much the Earth's magnetic field is structured as an axial dipole.

We consider the magnetic Schrodinger operator on R2. The magnetic field is the sum of a homogeneous magnetic field and periodically varying pointlike magnetic fields on a lattice. We shall give a sufficient condition for each Landau level to be an infinitely degenerated eigenvalue. This condition is also necessary for the lowest Landau …

The magnetic field is useful in material processes, heat exchangers, and various scientific research. The periodic magnetic field can create a periodic force. This periodic magnetic field is used in …

Here, we report a new approach to the modification of nanodiamonds by periodic magnetic field (PMF) enhanced hydrogen plasma. The rotating magnetic field can improve the spatial distribution of hydrogen plasma and keep charged particles in the plasma away from the vacuum chamber wall [13] .

Magnetic separation is widely used. All materials with magnetism in the magnetic field can be treated by magnetic separation, which is the main method to treat iron ore. All lean magnetite ores need to remove gangue minerals such as quartz through weakly magnetic field magnetic separators to improve the iron grade of concentrate. …

Magnetic fields generate intricate periodic trends. A computational study has uncovered unusual patterns in the electronegativity and hardness of elements when under the influence of strong magnetic fields. 1 The exotic behaviour of chemical systems in this type of environment has long been a topic of interest across chemistry and physics.

Quantum materials, particularly Dirac materials with linearly dispersing bands, can be effectively tuned by strain-induced lattice distortions leading to a pseudomagnetic field that strongly modulates their electronic properties. Here, we grow kagome magnet FeSn films, consisting of alternatingly stacked Sn2 honeycomb …

Magnetic Susceptibility - Mining Fundamentals. Magnetic susceptibility is a measure of the ability of a substance to be magnetized in the presence of an external magnetic field. In principle, magnetic susceptibility measurement is based on the amount and type of magnetic minerals within the rocks. In cases of positive magnetic susceptibility ...

Recycling the magnetic phosphate composite with an external magnetic field is a rapid and straightforward process. However, the effectiveness of recycling after recovery largely depends on the choice of desorption agent. CaFeP-1 interacts effectively with strong acids such as HNO 3, optimizing the desorption rate of uranium (Fig. 10 (A ...

Kobe 6500023, Japan; dazhi_li@hotmail. Abstract: In this paper, a novel method, named PM-E, to focus the sheet electron beam (SEB) is proposed. This new method consists of a periodic magnetic field and an electrostatic field, which are used to control the thickness and width of the SEB, respectively.

In this paper nanocrystalline diamond films have been deposited initially through a novel technique periodic magnetic field (PMF) (magnetic field B = B 0 sin ωt) assisted hot filament chemical vapor deposition.The effect of the increasing angular frequency (ω) on diamond film deposition was investigated.SEM and Raman …

Holmium is used to concentrate the magnetic field in MRI machines and improve image resolution Holmium is one of the lanthanoids, commonly known as rare earth elements. However the term rare earth is a misnomer because some are not actually rare: holmium is twenty times more abundant than silver.

We note that local spin-periodic magnetic field perturbations observed in some of the Pioneer and Voyager data were explained via a 'camshaft' model, which proposed that a hypothetical anomaly ...

Abstract. The properties of a two-dimensional electron gas (2DEG) under the influence of a perpendicular magnetic field which is periodic in one direction are investigated. Two situations are considered: (i) a periodic array of magnetic field steps, and (ii) a saw-tooth magnetic field profile. In contrast with the usual potential-modulated …

In this paper, a novel method, named PM-E, to focus the sheet electron beam (SEB) is proposed. This new method consists of a …

It is found that oscillation period, the magnitude of the magnetic field, and adding nanoparticles have an important effect on heat transfer, temperature field, and flow structure. In this paper, a numerical …

Magnetic susceptibility is a measure of the ability of a substance to be magnetized in the presence of an external magnetic field. In principle, magnetic susceptibility …

We have investigated the magnetoresistance (MR) of high mobility, near surface two-dimensional electron gases that are subject to a periodic magnetic field of amplitude up to 0.3 T. The fields are produced by sub-micron arrays of ferromagnetic stripes on the surface of the heterostructures. For small applied external magnetic fields …

Further, periodic magnetic field is kept at a fixed inclination angle regarding to the symmetry axis of its sinusoidal wave structure. The considered main parameters are Hartmann number (0 ≤ H a ≤ 100) and period of the periodic magnetic field (0. 25 ≤ Λ ≤ 1). The augmentation in Lorentz force is resulted with decrease in fluid ...

In this paper, a unified wrench model (UWM) in the two-dimensional (2D) periodic magnetic field is proposed by analysing the integral terms of the Lorentz force. It is available for coils with arbitrary shapes and arbitrary orientations. It gives the general form of the wrench excited by all the harmonic components of the magnetic field.

The morphology of samples was characterized by field emission scanning electron microscopy (SEM: FEI Sirion200). The quality of diamond films was investigated by a micro-Raman spectrometer (Lab Raman HR800), at an excitation wavelength of 488 nm (argon ion laser) with a power of 10 mW.The preferential orientation of films was …

We have investigated the influence of a time-periodic and spatially homogeneous magnetic field on the linear stability properties and on the nonlinear response of a ferrofluid layer heated from below and from above. A competition between stabilizing thermal and viscous diffusion and destabilizing buoyancy and Kelvin forces …

A dynamic magnetic field (DMF) with different angular frequencies (50, 100, and 150 π rad/s) was introduced during diamond growth via hot filament chemical vapor deposition (HFCVD). The effects of the dynamic magnetic field on the growth rate, diamond quality, growth orientation, and deposition uniformity of large-area diamond …

View a PDF of the paper titled Dirac electron under periodic magnetic field: Platform for fractional Chern insulator and generalized Wigner crystal, by Junkai Dong and 2 other authors

Magnetite is a black, opaque, magnetic mineral that leaves a black streak when rubbed across a hard rough surface. It is one of the most abundant metal oxides, and its crystal structure contains both the ferrous (Fe+2) and ferric (Fe+3) forms of iron ions. A complex pattern of electrons between the two forms of iron is the source of its ...

Abstract: The generation of strong periodic magnetic fields with short periodic lengths is very attractive for accelerator-based compact high-power future light sources. We have developed a new type of undulator using HTS bulk material to …

Since the permanent magnet has a thickness h, in order to simplify the analysis process, the center of the lower surface of the permanent magnet can be regarded as the rotation axis.Then an angled bias magnetic field varies with the increase in the rotation angle φ of the periodic permanent magnet. Since the eddy current on the …

Diverse IoT applications, such as unmanned driving, intelligent video, unmanned working face, industrial control, and intelligent robot inspection, are the key technologies in the field of intelligent mines. In order to fully meet the requirements of underground IoT systems of high bandwidth, low latency, and massive connections, it is …

We have investigated the magnetoresistance (MR) of high mobility, near surface two-dimensional electron gases that are subject to a periodic magnetic field of …