Second Moment of Dipolar Interaction for Arbitrary Directions of Magnetic Field and Arbitrary Spin Values in NQR

1972 ◽  
Vol 56 (12) ◽  
pp. 5930-5933 ◽  
Author(s):  
P. Grigolini
Keyword(s):  
Magnetic Field ◽  
Dipolar Interaction ◽  
Arbitrary Spin ◽  
Second Moment

scholarly journals Effect of a High Magnetic Field on Eutectoid Point Shift and Texture Evolution in 0.81C-Fe Steel

2008 ◽  
Vol 2008 ◽  
pp. 1-6 ◽  
Author(s):  
Y.D. Zhang ◽  
C. Esling ◽  
M. Calcagnotto ◽  
M.L. Gong ◽  
H. Klein ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Texture Evolution ◽  
Transverse Field ◽  
Dipolar Interaction ◽  
Statistical Thermodynamic ◽  
Field Calculation ◽  
Eutectoid Temperature ◽  
Pole Figures ◽  
Magnetic Dipolar Interaction ◽  
The Magnetic Field

A 12 T magnetic field has been applied to the annealing process of a 0.81%C-Fe (wt.%). It is found that the magnetic field shifts the eutectoid carbon content from 0.77 wt.% to 0.83 wt.%. The statistical thermodynamic calculations were performed to calculate the eutectoid temperature change by the magnetic field. Calculation shows that the increase of the eutectoid temperature by a 12 T field is 29∘C. Synchrotron radiation measurements were performed to measure the pole figures of the samples and were analyzed by MAUD to determine the bulk texture of the ferrite phase In the field-treated and non field-treated samples. Results show that although there is no specific preferred orientation appearing by applying the magnetic field, slight enhancement of (001) fiber component occurs in both the sample normal direction (ND) and the transverse direction (TD). This effect might be related to the magnetic dipolar interaction between Fe atoms in the transverse field direction.

Hysteresis Loops of Soft and Hard Magnetic Composited Wires

2013 ◽  
Vol 774-776 ◽  
pp. 763-766
Author(s):  
Yin Feng Li ◽  
Su Qin Feng ◽  
Lan Zhong Li ◽  
Pei Ying Chen ◽  
Peng Liu
Keyword(s):  
Magnetic Field ◽  
Magnetic Phase ◽  
Hysteresis Loops ◽  
Dipolar Interaction ◽  
Magnetic Alloys ◽  
Amorphous Wires ◽  
Two Phases ◽  
Measured Magnetic Field

Samples composed of soft and hard magnetic alloys were tailored by two steps annealing the same Fe-based amorphous wires. Then the measurements of hysteresisμ0Mloop have been performed upon the samples. The evolutions of loops with the fraction of hard magnetic phase and the measured magnetic field indicated the existence of dipolar interaction between the two phases.

scholarly journals Magnetic micro-droplet in rotating field: numerical simulation and comparison with experiment

2017 ◽  
Vol 821 ◽  
pp. 266-295 ◽  
Author(s):  
J. Erdmanis ◽  
G. Kitenbergs ◽  
R. Perzynski ◽  
A. Cēbers
Keyword(s):  
Magnetic Field ◽  
Boundary Integral Equations ◽  
Three Dimensional ◽  
Dipolar Interaction ◽  
Boundary Integral ◽  
Rotating Magnetic Field ◽  
Three Dimensions ◽  
Triaxial Ellipsoid ◽  
Equilibrium Shapes ◽  
Magnetic Droplet

Magnetic droplets obtained by induced phase separation in a magnetic colloid show a large variety of shapes when exposed to an external field. However, the description of the shapes is often limited. Here, we formulate an algorithm based on three-dimensional boundary-integral equations for strongly magnetic droplets in a high-frequency rotating magnetic field, allowing us to find their figures of equilibrium in three dimensions. The algorithm is justified by a series of comparisons with known analytical results. We compare the calculated equilibrium shapes with experimental observations and find a good agreement. The main features of these observations are the oblate–prolate transition, the flattening of prolate shapes with the increase of magnetic field strength and the formation of starfish-like equilibrium shapes. We show both numerically and in experiments that the magnetic droplet behaviour may be described with a triaxial ellipsoid approximation. Directions for further research are mentioned, including the dipolar interaction contribution to the surface tension of the magnetic droplets, accounting for the large viscosity contrast between the magnetic droplet and the surrounding fluid.

scholarly journals VACUUM BIREFRINGENCE CAUSED BY ARBITRARY SPIN PARTICLES

2008 ◽  
Vol 23 (04) ◽  
pp. 245-248 ◽  
Author(s):  
S. I. KRUGLOV
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Laser Beam ◽  
Transverse Magnetic Field ◽  
Vacuum Polarization ◽  
Transverse Magnetic ◽  
Arbitrary Spin ◽  
Effective Lagrangian ◽  
Linearly Polarized ◽  
Higher Spin

We study the propagation of a linearly polarized laser beam in the external transverse magnetic field taking into consideration the vacuum polarization by arbitrary spin particles. Induced ellipticity of the beam is evaluated using the effective Lagrangian. With the help of the PVLAS experimental data, we obtain bounds on masses of charged higher spin particles contributed to ellipticity.

scholarly journals Critical phenomena in 1D Ising model with arbitrary spin

2018 ◽  
Vol 185 ◽  
pp. 03004 ◽  
Author(s):  
Alexey Proshkin ◽  
Felix Kassan-Ogly ◽  
Alexander Zarubin ◽  
Tatyana Ponomareva ◽  
Ivan Menshikh
Keyword(s):  
Magnetic Field ◽  
Ising Model ◽  
Critical Phenomena ◽  
Exchange Interactions ◽  
Nearest Neighbors ◽  
Spin Correlation ◽  
Arbitrary Spin ◽  
Zero Temperature ◽  
Spin Correlation Function ◽  
Analytical Formulas

The aim of this work was to study critical phenomena taking place in 1D Ising model with different exchange interactions signs and arbitrary spin values in a magnetic field. Exact analytical formulas for frustration fields, zero temperature magnetization and entropy at these fields are obtained. The general behavior of pair spin correlation function with the accounting of only interactions between nearest neighbors is examined.

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