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Models of the Atom:
Models of the Atom:

Electrons in Atoms
Electrons in Atoms

... Electrons of an element can absorb energy and emit the energy as EM radiation These emission spectra are not continuous ...
Building a Microwave Antenna for a Quantum Microscope
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Electron spin resonance study of copper(II) hydrogenmalonate dihydrate complex S. M
Electron spin resonance study of copper(II) hydrogenmalonate dihydrate complex S. M

... magnetic interactions [7–9]. Additionally, the group provides an efficient pathway coupling magnetic centres depending on structural aspects of metal environment [10–12]. Copper(II) malonate complexes with the formula Cu(C3H2O4)× H2O where = 0, 1, 2, 2.5, 3, 4 have been reported previously [13–17]. ...
Chern-Simons Theory of Fractional Quantum Hall Effect
Chern-Simons Theory of Fractional Quantum Hall Effect

... striking about FQHE is that due to their fractional charge the effective objects, unlike atoms and molecules, cannot be thought of as a simple collection of more elementary particles. The FQHE is basically the problem of interacting electrons in 2D in the presence of a strong perpendicular magnetic ...
SOLID-STATE PHYSICS 3, Winter 2008 O. Entin-Wohlman Conductivity and conductance
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... destroyed, quantum interference disappears. One expects the dephasing time to be infinite at zero temperature, and to decrease as the temperature is increased. We will therefore assume that we are considering very low temperatures, such that the time over which the particle retains its phase coheren ...
Guide - Physics 122
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... In experiment, a beam of silver atoms were passed through inhomogeneous magnetic field and collected on photographic plate. Since silver involves spherically symmetric charge distribution plus one 5s electron, total angular momentum of ground state has L = 0. If outer electron in 5p state, L = 1 and ...
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Karthik Subramaniam Mitch McAlister Matt Sella Joey Orrino Erin

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supplemental information

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... - The third quantum number m is called the magnetic quantum number - It takes on the 2 Ɩ + 1 values m = 0, ±1, ±2, ……, ± Ɩ. - The z component of the angular momentum is determined completely by m through L z = m ħ. - The quantum number m is called the magnetic quantum number because the energy of a ...
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Soft and Hard Magnetic Materials:- Ferromagnetic
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... density increases to large values near these materials. The atoms and molecules of these materials have unpaired electrons and hence have permanent magnetic moments due to electron spin. The permanent magnetic moments present on individual atoms/ molecules in ferromagnetic materials due to exchange ...
Quantum Lecture _08
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Nanodevices for quantum computation

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Ferromagnetism



Not to be confused with Ferrimagnetism; for an overview see Magnetism.Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. In physics, several different types of magnetism are distinguished. Ferromagnetism (including ferrimagnetism) is the strongest type: it is the only one that typically creates forces strong enough to be felt, and is responsible for the common phenomena of magnetism in magnets encountered in everyday life. Substances respond weakly to magnetic fields with three other types of magnetism, paramagnetism, diamagnetism, and antiferromagnetism, but the forces are usually so weak that they can only be detected by sensitive instruments in a laboratory. An everyday example of ferromagnetism is a refrigerator magnet used to hold notes on a refrigerator door. The attraction between a magnet and ferromagnetic material is ""the quality of magnetism first apparent to the ancient world, and to us today"".Permanent magnets (materials that can be magnetized by an external magnetic field and remain magnetized after the external field is removed) are either ferromagnetic or ferrimagnetic, as are other materials that are noticeably attracted to them. Only a few substances are ferromagnetic. The common ones are iron, nickel, cobalt and most of their alloys, some compounds of rare earth metals, and a few naturally-occurring minerals such as lodestone.Ferromagnetism is very important in industry and modern technology, and is the basis for many electrical and electromechanical devices such as electromagnets, electric motors, generators, transformers, and magnetic storage such as tape recorders, and hard disks.
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