Color centers in mixed crystals of alkali silver halides and ammonium silver halides

Awano, Teruyoshi; Matsuyama, Tomohiro

doi:10.1080/10420159508227255

Cited by 3 publications

(4 citation statements)

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“…It has been demonstrated that F A and F B color centers formed by inserting one or two alkali-impurity ions in the lattice of the crystals next to F-centers can increase the probability of the excited state being reduced to the relaxed excited state . Various ion-doped crystals have been found to be capable of excellent optical performance as a color center laser crystal, such as KCl–NaCl eutectic salt, KMgF 3 , and KCl–KBr . The superior deliquescent resistance makes alkali fluorides more effective in enabling the applications of laser crystal materials.…”

Section: Introductionmentioning

confidence: 99%

“…14 Various ion-doped crystals have been found to be capable of excellent optical performance as a color center laser crystal, such as KCl−NaCl eutectic salt, 15 KMgF 3 , 16 and KCl−KBr. 17 The superior deliquescent resistance makes alkali fluorides more effective in enabling the applications of laser crystal materials. However, alkali fluorides are rarely reported for their use as a color center laser crystal because it can hardly form a solid solution at room temperature.…”

Section: ■ Introductionmentioning

confidence: 99%

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High-Temperature Magic-Angle Spin Nuclear Magnetic Resonance Reveals Sodium Ion-Doped Crystal-Phase Formation in FLiNaK Eutectic Salt Solidification

et al. 2021

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The new salt heating magic-angle spin (MAS) system for high-temperature nuclear magnetic resonance (HT-NMR) is achieved by a laser heating beam coupled with optical fiber. The formation of a sodium ion-doped crystal KF phase is revealed in FLiNaK ternary eutectic salt (46.5%LiF–11.5%NaF–42.0%KF), which is considered unable to exist at room temperature according to its phase diagram. Density functional theory (DFT) simulation proved that Na+ ion-doped crystal is clearly ascertained to develop with the solidification of the melt. Temperature dependence, relaxation, and variable contact time cross-polarization NMR studies provide insights into the unique dynamics and the spatial scale of the doped Na+ ions in KF crystals, which exhibit faster ionic vibration due to the weakening of coordinated interactions from the ambient F– ions.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

High-Temperature Magic-Angle Spin Nuclear Magnetic Resonance Reveals Sodium Ion-Doped Crystal-Phase Formation in FLiNaK Eutectic Salt Solidification

et al. 2021

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“…10 Unlike KCl− NaCl or KMgF 3 crystals, it is always believed that alkali metal fluorides cannot form a solid solution at ambient temperature from the existing phase diagram studies, and the NaF and KF will separate phases at ambient temperature. 11 Therefore, alkali metal fluorides are rarely reported to serve as a color center laser crystal.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Potassium magnesium fluoride crystal (KMgF 3 ) is reported to serve as an ambient temperature pump laser crystal, which is formed by cooling the high-temperature liquid mixture of MgF 2 and KF into solid state . Unlike KCl–NaCl or KMgF 3 crystals, it is always believed that alkali metal fluorides cannot form a solid solution at ambient temperature from the existing phase diagram studies, and the NaF and KF will separate phases at ambient temperature . Therefore, alkali metal fluorides are rarely reported to serve as a color center laser crystal.…”

Section: Introductionmentioning

confidence: 99%

Probing the Structure and Dynamics of Na⁺ Ionic Doped LiF Crystals in Fluoride Eutectic Salt by Solid-State NMR

Huang

Ling-zhi

et al. 2023

J. Phys. Chem. C

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In this study, it was demonstrated that Na+ ionic doped crystals could be formed during the solidification of FLiNaK melts. The ionic adulterating behavior between Li+, Na+, and K+ ions was investigated in detail by using various 1D/2D solid-state NMR methods and theoretical calculations. 2D 19F–23Na and 19F–7Li HETCOR NMR showed that the Na+ ions could be doped into LiF and KF crystals to generate new adulterating phases. Furthermore, the doped ionic Na+ ions exhibited different dynamics in LiF and KF crystals, which is correlated to the bonding length of the lattice and the Na–F coordinated interactions. This study provides more insights into the ionic doped crystal phase formation in such simple alkali metal fluorides, which may be of greater significance in the application as optical devices.

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1.42 Iodine-centered radicals

Claridge

2007

Inorganic Radicals, Metal Complexes and Nonconjugated Carbon Centered Radicals. Part 1

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Color centers in mixed crystals of alkali silver halides and ammonium silver halides

Cited by 3 publications

References 3 publications

High-Temperature Magic-Angle Spin Nuclear Magnetic Resonance Reveals Sodium Ion-Doped Crystal-Phase Formation in FLiNaK Eutectic Salt Solidification

High-Temperature Magic-Angle Spin Nuclear Magnetic Resonance Reveals Sodium Ion-Doped Crystal-Phase Formation in FLiNaK Eutectic Salt Solidification

Probing the Structure and Dynamics of Na⁺ Ionic Doped LiF Crystals in Fluoride Eutectic Salt by Solid-State NMR

1.42 Iodine-centered radicals

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Color centers in mixed crystals of alkali silver halides and ammonium silver halides

Cited by 3 publications

References 3 publications

High-Temperature Magic-Angle Spin Nuclear Magnetic Resonance Reveals Sodium Ion-Doped Crystal-Phase Formation in FLiNaK Eutectic Salt Solidification

High-Temperature Magic-Angle Spin Nuclear Magnetic Resonance Reveals Sodium Ion-Doped Crystal-Phase Formation in FLiNaK Eutectic Salt Solidification

Probing the Structure and Dynamics of Na+ Ionic Doped LiF Crystals in Fluoride Eutectic Salt by Solid-State NMR

1.42 Iodine-centered radicals

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Probing the Structure and Dynamics of Na⁺ Ionic Doped LiF Crystals in Fluoride Eutectic Salt by Solid-State NMR