at the same time as sunspot maximum—over the record shown, the flare activity maximum occurs several years post sunspot maximum. (c) Latitude–time distribution of the GOES flares ofb. (d) Latitude–time variation of the photospheric magnetic field at the central meridian. Note the strong ...
The total magnetic field at a given point x in the magnetic medium equals the sum of the head field Hh (x) and the demagnetization field Hd (x). H(x)=Hh(x)+Hd(x) As this field is applied to the M–H loop of the magnetic medium, described by the non-linear function M(H), ...
Point-contact experiments in the magnetic field may be used both to study the material properties and to search the influence of the restricted geometry on the constriction conductivity (trajectory effects). The mesoscopic phenomena in the magnetoconductivity also relate to the latter issues. Sharvin ...
Here, the ferromagnetic properties are what have been created by strain, magnetic field, and temperature along with observation of the parallel magnetic domains in ferromagnetic graphene for the first time as a great achievement. In this way, we have represented the following: First, introducing ...
Oliveira, A.J.T., Sant’Ovaia, H., Martins, H.C.B.et al.Low-field magnetic fabrics and mineralogy of subvolcanic dykes from northern Portugal: Magma flow and petrogenetic implications.J Iber Geol(2025). https://doi.org/10.1007/s41513-024-00276-4 ...
Magnetic field, a vector field in the neighborhood of a magnet, electric current, or changing electric field, in which magnetic forces are observable. Magnetic fields such as that of Earth cause magnetic compass needles and other permanent magnets to lin
point in opposite directions. In this case, the magnetic fields created by those spins point in opposite directions, so they cancel each other. However, some atoms contain one or more unpaired electrons, and these unpaired electrons create a tiny magnetic field. The direction of their spin ...
That original stronger magnetic field would have died off by 3 billion years ago as the moon drifted farther from Earth. At that point, a different mechanism must have created the moon’s new, weaker field, which stuck around for another billion years or more. ...
D. Magnetic field-induced superconductivity in the ferromagnet URhGe. Science 309, 1343–1346 (2005). Article ADS Google Scholar Lévy, F., Sheikin, I. & Huxley, A. Acute enhancement of the upper critical field for superconductivity approaching a quantum critical point in URhGe. Nat. Phys...
The weak magnetic field hadn’t always been that way: The team examined similar rocks from South Africa that dated back more than 2 billion years and found, at that point in time, the Earth’s magnetic field was as strong as it is today. ...