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Potassium loading density dependence of hyperfine coupling in Na-K alloy clusters in zeolite low-silica X.

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Title: Potassium loading density dependence of hyperfine coupling in Na-K alloy clusters in zeolite low-silica X.
Authors: Igarashi, Mutsuo1 (AUTHOR) igarashi@gunma-ct.ac.jp, Shimizu, Tadashi2 (AUTHOR), Goto, Atsushi2 (AUTHOR), Hashi, Kenjiro2 (AUTHOR), Yamamichi, Keiko1 (AUTHOR), Nakano, Takehito3 (AUTHOR) takehito.nakano.phys@vc.ibaraki.ac.jp
Source: Interactions (30050731). 2/19/2026, Vol. 247 Issue 1, p1-14. 14p.
Subjects: Hyperfine coupling, Zeolites, Nuclear magnetic resonance spectroscopy, Metal clusters, Ferrimagnetism, Electron density, Magnetic susceptibility
Abstract: The loading density n dependence of the hyperfine coupling constant A between Na and uniform susceptibility in the cage was examined using Na NMR spectra for Na-K form low-silica X zeolite loaded with potassium. As n increased and ferrimagnetic ordering disappeared, A grew several times larger. This can essentially be understood as an enhancement of the hyperfine interaction among the cages, owing to the denser electron condition. Other than such the effect, it is pointed out that a transitional change in local susceptibility may occur among the cage and the supercage, following the change of n. [ABSTRACT FROM AUTHOR]
Copyright of Interactions (30050731) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 191694226
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  Data: Potassium loading density dependence of hyperfine coupling in Na-K alloy clusters in zeolite low-silica X.
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  Data: <searchLink fieldCode="DE" term="%22Hyperfine+coupling%22">Hyperfine coupling</searchLink><br /><searchLink fieldCode="DE" term="%22Zeolites%22">Zeolites</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance+spectroscopy%22">Nuclear magnetic resonance spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+clusters%22">Metal clusters</searchLink><br /><searchLink fieldCode="DE" term="%22Ferrimagnetism%22">Ferrimagnetism</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+density%22">Electron density</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+susceptibility%22">Magnetic susceptibility</searchLink>
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  Data: The loading density n dependence of the hyperfine coupling constant A between Na and uniform susceptibility in the cage was examined using Na NMR spectra for Na-K form low-silica X zeolite loaded with potassium. As n increased and ferrimagnetic ordering disappeared, A grew several times larger. This can essentially be understood as an enhancement of the hyperfine interaction among the cages, owing to the denser electron condition. Other than such the effect, it is pointed out that a transitional change in local susceptibility may occur among the cage and the supercage, following the change of n. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Interactions (30050731) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10751-026-02382-4
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              Text: 2/19/2026
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