The digital filtration preprocessing of variable magnetic field Hall data before mobility spectrum analysis for p-MCT films

2016 ◽  
Vol 13 (7-9) ◽  
pp. 465-468
Author(s):  
A. V. Trifanov ◽  
D. Yu. Protasov ◽  
V. Ya. Kostyuchenko ◽  
N. N. Mikhailov ◽  
S. A. Dvoretsky
Keyword(s):  
Magnetic Field ◽  
Spectrum Analysis ◽  
Variable Magnetic Field ◽  
Mobility Spectrum ◽  
Digital Filtration

scholarly journals New approach to describe two coupled spins in a variable magnetic field

2021 ◽  
Author(s):  
Yury Belousov ◽  
Roberto Grimaudo ◽  
Antonino Messina ◽  
Agostino Migliore ◽  
Alessandro Sergi
Keyword(s):  
Magnetic Field ◽  
Variable Magnetic Field ◽  
New Approach

scholarly journals Mobility spectrum analysis on three-dimensional topological insulator BiSbTeSe2

2021 ◽  
Vol 118 (25) ◽  
pp. 253107
Author(s):  
Jimin Wang ◽  
Alexander Kurzendorfer ◽  
Lin Chen ◽  
Zhiwei Wang ◽  
Yoichi Ando ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Spectrum Analysis ◽  
Three Dimensional ◽  
Mobility Spectrum

Influences of Marangoni Convection and Variable Magnetic Field Hybrid Nanofluid Thin Film Flow past a Stretching Surface

2021 ◽  
Author(s):  
Noor Wali Khan ◽  
Arshad Khan ◽  
Muhammad Usman ◽  
Taza Gul ◽  
Abir Mouldi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Film Flow ◽  
Marangoni Convection ◽  
Flow System ◽  
Thermal Characteristics ◽  
Variable Magnetic Field ◽  
Current Work ◽  
Hybrid Nanofluid ◽  
Thin Film Flow

Abstract The investigations about thin-film flow play a vital role in the field of optoelectronics and magnetic devices. Thin films are reasonably hard and thermally stable but are more fragile. The thermal stability of thin film can be further improved by incorporating the effects of nanoparticles. In the current work, a stretchable surface is considered upon which hybrid nanofluid thin-film flow is taken into account. The idea of augmenting heat transmission is focused in current work by making use of hybrid nanofluid. The flow is affected by variations in the viscous forces along with viscous dissipation effects and Marangoni convection. A time-constrained magnetic field is applied in the normal direction to the flow system. The equations governing the flow system are shifted to a non-dimensional form by applying similarity variables. The homotopy analysis method (HAM) has been employed to find the solution of resultant equations. It has been noticed in this study that, the flow characteristics decline with augmentation in magnetic, viscosity, and unsteadiness parameters while grow up with enhancing values of thin-film parameter. Thermal characteristics are supported by the growing values of the Eckert number and unsteadiness parameter while opposed by the viscosity parameter and Prandtl number. The numerical impact of different emerging parameters upon skin friction and Nusselt number has been calculated in tabular form. A comparison of current work with established result has carried out with a good agreement in both results.

scholarly journals Improved model of the triple system V746 Cassiopeiae that has a bipolar magnetic field associated with the tertiary

2017 ◽  
Vol 609 ◽  
pp. A5
Author(s):  
P. Harmanec ◽  
M. Brož ◽  
P. Mayer ◽  
P. Zasche ◽  
L. Kotková ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Triple System ◽  
Detection Threshold ◽  
Variable Magnetic Field ◽  
Close Binary ◽  
Rotational Period ◽  
Orbital Inclination ◽  
Photometric Observations ◽  
Optical Region ◽  
Improved Model

V746 Cas is known to be a triple system composed of a close binary with an alternatively reported period of either 25\hbox{$.\!\!^{\rm d}$}4 or 27\hbox{$.\!\!^{\rm d}$}8 and a distant third component in a 170 yr (62 000 d) orbit. The object was also reported to exhibit multiperiodic light variations with periods from 0\hbox{$.\!\!^{\rm d}$}83 to 2\hbox{$.\!\!^{\rm d}$}50, on the basis of which it was classified as a slowly pulsating B star. Interest in further investigation of this system was raised by the recent detection of a variable magnetic field. Analysing spectra from four instruments, earlier published radial velocities, and several sets of photometric observations, we arrived at the following conclusions: (1) The optical spectrum is dominated by the lines of the B-type primary (Teff 1 ~ 16 500(100) K), contributing 70% of the light in the optical region, and a slightly cooler B tertiary (Teff 3 ~ 13 620(150) K). The lines of the low-mass secondary are below our detection threshold; we estimate that it could be a normal A or F star. (2) We resolved the ambiguity in the value of the inner binary period and arrived at a linear ephemeris of \hbox{$T_{\rm super.\,conj.}={\rm HJD}~2\,443\,838.78(81)+25\fd41569(42)\times E$}. (3) The intensity of the magnetic field undergoes a sinusoidal variation in phase with one of the known photometric periods, namely 2\hbox{$.\!\!^{\rm d}$}503867(19), which we identify with the rotational period of the tertiary. (4) The second dominant photometric 1\hbox{$.\!\!^{\rm d}$}0649524(40) period is tentatively identified with the rotational period of the broad-lined B-type primary, but this interpretation is much less certain and needs further verification. (5) If our interpretation of photometric periods is confirmed, the classification of the object as a slowly pulsating B star should be revised. (6) Applying an N-body model to different types of available observational data, we can constrain the orbital inclination of the inner orbit to ~60°<i1< 85° even in the absence of binary eclipses, and we estimate the probable properties of the triple system and its components.

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