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The Weiss magneton was experimentally derived in 1911 as a unit of magnetic moment equal to 1.53 × 10 −24 joules per tesla, which is about 20% of the Bohr magneton. In the summer of 1913, the values for the natural units of atomic angular momentum and magnetic moment were obtained by the Danish physicist Niels Bohr as a consequence of his ...
The ratio between the true spin magnetic moment and that predicted by this model is a dimensionless factor g e, known as the electron g-factor: = . It is usual to express the magnetic moment in terms of the reduced Planck constant ħ and the Bohr magneton μ B : μ = − g e μ B L ℏ . {\displaystyle {\boldsymbol {\mu }}=-g_{\text{e}}\,\mu ...
The magnetic moment of the electron is =, where μ B is the Bohr magneton, S is electron spin, and the g-factor g S is 2 according to Dirac's theory, but due to quantum electrodynamic effects it is slightly larger in reality: 2.002 319 304 36.
The best available measurement for the value of the magnetic moment of the neutron is μ n = −1.913 042 76 (45) μ N. [3] [4] Here, μ N is the nuclear magneton, a standard unit for the magnetic moments of nuclear components, and μ B is the Bohr magneton, both being physical constants.
Bohr magneton; Bohr model. Bohr model of the chemical bond; Bohr orbital; Bohr radius; Bohr's frequency condition; Bohrium, the chemical element with atomic number 107 [1] Bohr–Van Leeuwen theorem; Bohr–Kramers–Slater theory; Bohr–Einstein debates; Sommerfeld–Bohr theory. Bohr–Sommerfeld quantization; Bohr's complementarity principle
where is the Bohr magneton, is the total electronic angular momentum, and is the Landé g-factor. A more accurate approach is to take into account that the operator of the magnetic moment of an electron is a sum of the contributions of the orbital angular momentum L → {\displaystyle {\vec {L}}} and the spin angular momentum S → ...
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In the Stoner model, the spin-only magnetic moment (in Bohr magnetons) per atom in a ferromagnet is given by the difference between the number of electrons per atom in the majority spin and minority spin states. The Stoner model thus permits non-integral values for the spin-only magnetic moment per atom.