Magnetic strength and orientation of an object that produces a magnetic field
Magnetic moment m of a current I, enclosing an area a.
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In electromagnetism, the magnetic moment or magnetic dipole moment is the combination of strength and orientation of a magnet or other object or system that exerts a magnetic field. The magnetic dipole moment of an object determines the magnitude of torque the object experiences in a given magnetic field. When the same magnetic field is applied, objects with larger magnetic moments experience larger torques. The strength (and direction) of this torque depends not only on the magnitude of the magnetic moment but also on its orientation relative to the direction of the magnetic field. Its direction points from the south pole to north pole of the magnet (i.e., inside the magnet).
The magnetic moment also expresses the magnetic force effect of a magnet. The magnetic field of a magnetic dipole is proportional to its magnetic dipole moment. The dipole component of an object's magnetic field is symmetric about the direction of its magnetic dipole moment, and decreases as the inverse cube of the distance from the object.
Examples of objects or systems that produce magnetic moments include: permanent magnets; astronomical objects such as many planets, including the Earth, and some moons, stars, etc.; various molecules; elementary particles (e.g. electrons); composites of elementary particles (protons and neutrons—as of the nucleus of an atom); and loops of electric current such as exerted by electromagnets.
magneticmoment or magnetic dipole moment is the combination of strength and orientation of a magnet or other object or system that exerts a magnetic...
atomic physics, the electron magneticmoment, or more specifically the electron magnetic dipole moment, is the magneticmoment of an electron resulting from...
nuclear magneticmoment is the magneticmoment of an atomic nucleus and arises from the spin of the protons and neutrons. It is mainly a magnetic dipole...
keeping the magneticmoment constant. It is a magnetic analogue of the electric dipole, but the analogy is not perfect. In particular, a true magnetic monopole...
units, the strength of the magnetic B field is given in teslas. A magnet's magneticmoment (also called magnetic dipole moment and usually denoted μ) is...
A magnetic field is a physical field that describes the magnetic influence on moving electric charges, electric currents,: ch1 and magnetic materials...
distance varies. Many factors can influence the magnetic field of an object including the magneticmoment of the material, the physical shape of the object...
particle. The magneticmoment, also called magnetic dipole moment, is a measure of the strength of a magnetic source. The "Dirac" magneticmoment, corresponding...
magnet with a permanent magnetic dipole moment. Dipoles, whether electric or magnetic, can be characterized by their dipole moment, a vector quantity. For...
that implies the violation of the baryon number conservation. The magneticmoment of the antineutron is the opposite of that of the neutron. It is +1...
of charges Electron magneticmoment Nuclear magneticmoment, the magneticmoment of an atomic nucleus Topological dipole moment, the measure of the topological...
Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field...
in other disciplines) of a particle or system is the ratio of its magneticmoment to its angular momentum, and it is often denoted by the symbol γ, gamma...
own magneticmoment. Simplistically, the magneticmoment of the neutron can be viewed as resulting from the vector sum of the three quark magnetic moments...
could exhibit spontaneous magnetization: a net magneticmoment in the absence of an external magnetic field; that is, any material that could become a...
a planet all have magnetic moments. More precisely, the term magneticmoment normally refers to a system's magnetic dipole moment, which produces the...
after Joseph Larmor) is the precession of the magneticmoment of an object about an external magnetic field. The phenomenon is conceptually similar to...
magnetic dipole moments in a magnetic material. Accordingly, physicists and engineers usually define magnetization as the quantity of magneticmoment...
magnetic moments of all electrons and the nucleus. The magneticmoment of the nucleus is negligible compared with that of the electrons. The magnetic...
Fermilab. The anomalous magnetic dipole moment is the difference between the experimentally observed value of the magnetic dipole moment and the theoretical...
Magnetic energy and electrostatic potential energy are related by Maxwell's equations. The potential energy of a magnet or magneticmoment m {\displaystyle...
possesses angular momentum due to its nuclear spin. The magnetic field produced by an atom—its magneticmoment—is determined by these various forms of angular...
paramagnetic. The magnitude of the paramagnetism is expressed as an effective magneticmoment, μeff. For first-row transition metals the magnitude of μeff is, to...
change the magneticmoment. The magnetization can also change by addition or subtraction of domains (called nucleation and denucleation). Magnetic hysteresis...
to their spin, unpaired electrons have a magnetic dipole moment and act like tiny magnets. An external magnetic field causes the electrons' spins to align...
contributors to the magneticmoment, the electron magneticmoment and the nuclear magneticmoment. Of these two terms, the electron magneticmoment dominates,...
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