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1H multiple quantum NMR in alternating quasi-one-dimensional spin chains of hambergiteстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 июня 2024 г.
- Авторы: Bochkin G.A., Fel'dman E.B., Kiryukhin D.P., Kushch P.P., Vasil'ev S.G.
- Журнал: Journal of Magnetic Resonance
- Том: 350
- Год издания: 2023
- Издательство: Academic Press
- Местоположение издательства: United States
- Номер статьи: 107415
- DOI: 10.1016/j.jmr.2023.107415
- Аннотация: Multiple quantum (MQ) dynamics was investigated in quasi-one-dimensional 1H zigzag spin chains in hambergite (Be2BO3OH) single crystals. Due to the non-linear arrangement of the spins, dipolar coupling strengths alternate along the chain. To solve the problem of MQ NMR experiments taking too much time due to extremely long 1H spin–lattice relaxation times, the samples were exposed to gamma irradiation to produce the defects accelerating the relaxation. The influence of the radiation dose was investigated. The experimental dependencies of MQ coherence intensities on the MQ excitation time in alternating spin chains were obtained and compared with the theory for inhomogeneous spin chains with nearest neighbor interactions developed earlier. The correspondence of the observed MQ dynamics to the alternating spin chain was demonstrated.
- Добавил в систему: Васильев Сергей Геннадьевич