نتایج جستجو برای: induced magnetic field

تعداد نتایج: 1967543  

1998
G. W. Semenoff

The magnetic catalysis of discrete chiral symmetry breaking in the 2+1 dimensional Nambu-Jona-Lasinio model is analyzed. A particular attention is paid to a possible application of the effect in solid state physics. The fermion contribution to the thermal conductivity as a function of the dynamical mass (energy gap in the spectrum) is estimated and is shown to be suppressed when a non-zero orde...

2015
Peter Müllner Markus Chmielus David C. Dunand Yuttanant Boonyongmaneerat Ken J. Pedersen Barbara S. Pedersen

1998
T. Schneider

The c-axis resistivity measurements in YBa2Cu4O8 from Hussey et al. for magnetic field orientations along the c-axis as well as within the ab-plane are analyzed and interpreted using the scaling theory for static and dynamic classical critical phenomena. We identify a superconductor to normal conductor transition for both field orientations as well as a normal conductor to insulator transition ...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2013
T H Cheffings M R Lees G Balakrishnan O A Petrenko

Heat capacity measurements were used to investigate the magnetic ordering processes in single-crystal samples of SrDy2O4 in a magnetic field applied along the [010] and [001] directions. In zero field this compound appears to be magnetically disordered down to at least 0.39 K. A magnetic field applied along the [010] direction induces a very sharp transition at 20 kOe, seen as a strong peak in ...

2003
J. Rivas M. R. Ibarra

Magnetic anisotropy has been measured for the ferromagnetic La0.7Sr0.3CoO3 perovskite from an analysis of the high-field part of the magnetization vs. field curves, i.e., the magnetic saturation regime. These measurements give a magnetic anistropy one order of magnitude higher than that of reference manganites. Surprisingly, the values of the magnetic anisotropy cal-

2008
Ignatios Antoniadis Alexey Boyarsky Oleg Ruchayskiy

We consider a modification of electrodynamics by an additional light massive vector field, interacting with the photon via Chern-Simons-like coupling. This theory predicts observable effects for the experiments studying the propagation of light in an external magnetic field, very similar to those, predicted by theories of axion and axion-like particles. We discuss a possible microscopic origin ...

Journal: :iranian journal of radiation research 0
a.d. esmaeeli department of medical radiation engineering, science and research branch, islamic azad university, tehran, iran m. pouladian department of medical radiation engineering, science and research branch, islamic azad university, tehran, iran a.s. monfared department of medical physics, babol university of medical sciences, babol, iran s.r. mahdavi department of medical physics, tehran university of medical sciences, tehran, iran d. moslemi department of radiation oncology, babol university of medical sciences, babol, iran

background: to reduce the dose to normal tissues surrounding the treated breast, a uniform magnetic field was used within a humanoid phantom in breast radiotherapy. materials and methods: monte carlo simulations were performed with geant4, irradiating humanoid phantoms in a magnetic field. to reconstruct phantoms, computed tomography (ct) data slices of four patients were used for the monte car...

2015
William Faulkner

Background Magnetism is a fundamental property of matter. As such, all substances have some type of magnetic property. Magnetic susceptibility refers to an object’s or substance’s ability to become magnetized. If two substances with different magnetic susceptibilities are close to one another, a small local magnetic field gradient is induced. The greater the difference in magnetic susceptibilit...

Journal: :iranian journal of public health 0
f. akbar khanzadeh

the exposure of workers to magnetic field that occur in aluminum reduction potrooms has been studied. the pattern of magnetic field intensity has been demonstrated along the shop. it has clearly been shown that the personnel working near the pots are exposed to 20-to 1000-gauss magnetic field. to set limits of exposure to magnetic fields, the literature on the biological effects of stationary m...

In this work, a stable NiFe2O4 paraffin based ferrofluid was prepared via high energy milling. The rheological properties of ferrofluid were studied. Bingham plastic, HerschelBulkley and Casson models were used to evaluate the shear stress-shear rate dependency. The ferrofluid exhibited a shear thinning behaviour for all studied magnetic field. The magneto-viscous effect and thixotropy of...

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