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- W2323642670 abstract "A study is made of the small electronic $g$-factor shifts observed in complex paramagnetic substances. In most cases there is a simple connection between the contribution of a given ion or atom to $ensuremath{Delta}g$ and the anisotropic part of the magnetic hyperfine interaction of its nucleus with the electron. This connection is useful now that a double-spin-resonance technique developed recently by Feher can give experimental values for such hyperfine interaction constants.The theory is applied to the case of the $F$-center. It is shown that a central $F$-center wave function need not have a large $g$-state component to account for the order of magnitude of the observed $ensuremath{Delta}g$, provided that the function used is orthogonal to the ion-core orbitals. Both the positive and negative ions contribute to $ensuremath{Delta}g$. With the aid of Feher's hyperfine-structure measurements in KCl, one gets: $ensuremath{Delta}g (mathrm{theory})=ensuremath{-}0.0053$ as compared with $ensuremath{Delta}g (mathrm{exp})=ensuremath{-}0.0070$.Exchange interactions between the $F$-electron and the ion-core electrons are offered as a possible explanation of the positive $ensuremath{Delta}g$ found for LiF. Such interactions could polarize the nearest-neighbor halide ions, effectively creating a hole. It is estimated that a 0.5-1% polarization of the ${mathrm{F}}^{ensuremath{-}}$ $2p$ orbitals would be required." @default.
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- W2323642670 date "1957-07-15" @default.
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- W2323642670 title "Electronic<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>g</mml:mi></mml:math>-Factor and the Structure of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>F</mml:mi></mml:math>-Centers" @default.
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- W2323642670 doi "https://doi.org/10.1103/physrev.107.488" @default.
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