Results 251 to 260 of about 125,661 (296)
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Nature, 1995
The question of whether weak, extremely low-frequency electromagnetic fields (EMFs) can cause cancer always generates heated debate (see, for example, refs 1-3). In addition to epidemiological studies, a substantial body of literature exists on EMF stimulation of cells grown in vitro (for example, refs 4, 5). Although numerous effects have been
Kobayashi, Atsuko K. +2 more
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The question of whether weak, extremely low-frequency electromagnetic fields (EMFs) can cause cancer always generates heated debate (see, for example, refs 1-3). In addition to epidemiological studies, a substantial body of literature exists on EMF stimulation of cells grown in vitro (for example, refs 4, 5). Although numerous effects have been
Kobayashi, Atsuko K. +2 more
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Superconductivity and Ferromagnetism
IBM Journal of Research and Development, 1962Superconductivity and ferromagnetism were considered exclusive phenomena for many decades. Ever since Kamerlingh Onnes' discovery that strong magnetic fields will destroy superconductivity it had been assumed that the large internal, or Weiss field, in a ferromagnet would never permit the occurrence of superconductivity.
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Nuclear Ferromagnetism and Antiferromagnetism
Physica B+C, 1977Abstract This article, written for the lay reader, describes some studies, initiated in the author's laboratory in the late 1960s and pursued there for more than 15 years. The interested reader can find a full technical description in the book Nuclear Magnetism. Order and Disorder by A. Abragam and M. Goldman. The present account is an abridged version
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Conductance spectra of asymmetric ferromagnet/ferromagnet/ferromagnet junctions
Journal of Magnetism and Magnetic Materials, 2017Abstract A theory of tunneling spectroscopy of ferromagnet/ferromagnet/ferromagnet junctions was studied. We applied a delta-functional approximation for the interface scattering properties under a one-dimensional system of a free electron approach.
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Multi-state magnetoresistance in ferromagnet/organic-ferromagnet/ferromagnet junctions
Applied Physics Letters, 2014Spin-dependent transport through a ferromagnetic metal/organic-ferromagnet/ferromagnet metal junction is investigated theoretically. It is demonstrated that the current through the device strongly depends on the alignment of the magnetization orientations of the electrodes and interlayer.
G. C. Hu +4 more
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Soliton dynamics in planar ferromagnets and anti-ferromagnets
Journal of Zhejiang University-SCIENCE A, 2003The aim of this paper is to present a rigorous mathematical proof of the dynamical laws for the topological solitons(magnetic vortices) in ferromagnets and anti-ferromagnets. It is achieved through the conservation laws for the topological vorticity and the weak convergence methods.
Lin, Fanghua, Shatah, Jalal
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Physical Review B, 2017
We show that the peculiarities of the electron band structure strongly affect the spin-valve effect in heterostructures consisting of a superconductor (S) and two ferromagnetic layers ${\mathrm{F}}_{1}$ and ${\mathrm{F}}_{2}$. For the $\mathrm{S}/{\mathrm{F}}_{1}/{\mathrm{F}}_{2}$ systems the energy shift between the electron bands in the S and ...
Zh. Devizorova, S. Mironov
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We show that the peculiarities of the electron band structure strongly affect the spin-valve effect in heterostructures consisting of a superconductor (S) and two ferromagnetic layers ${\mathrm{F}}_{1}$ and ${\mathrm{F}}_{2}$. For the $\mathrm{S}/{\mathrm{F}}_{1}/{\mathrm{F}}_{2}$ systems the energy shift between the electron bands in the S and ...
Zh. Devizorova, S. Mironov
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Tunneling Magnetoresistance in Ferromagnet/Insulator/Ferromagnet Junctions
International Journal of Modern Physics B, 1997A δ-type potential with complex prefactor is modeled on the tunneling barrier of a thin insulator (I) film separating two ferromagnetic (FM) films. By matching value and slope of wave functions across the tunneling barrier of a FM/I/FM junction, we obtain a general expression for tunneling conductance as a function of relative orientation θ between ...
Yang, X +4 more
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Criteria for ferromagnetic–insulator–ferromagnetic tunneling
Journal of Magnetism and Magnetic Materials, 2002The Rowell criteria, commonly used to identify tunneling in magnetic tunnel junctions (MTJ), are scrutinized. While neither the exponential-thickness dependence of the conductivity nor fits of non-linear transport data are found to be reliable tunneling criteria, the temperature-dependent conductivity does remain a solid criterion.
Johan J. Åkerman +7 more
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Ferromagnetic resonance in amorphous ferromagnet
Solid State Communications, 1984Abstract The peculiarities of the ferromagnetic resonance of an amorphous ferromagnet in which a certain number of atoms forms the two-level systems are studied. The logarithmic dependence upon the temperature and the applied magnetic field of the frequency shift of the ferromagnetic resonance is obtained.
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