{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T17:12:01Z","timestamp":1751476321550},"reference-count":75,"publisher":"Mineralogical Society","issue":"3","license":[{"start":{"date-parts":[[2018,7,9]],"date-time":"2018-07-09T00:00:00Z","timestamp":1531094400000},"content-version":"unspecified","delay-in-days":5425,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clay miner."],"published-print":{"date-parts":[[2003,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The main developments taking place in Nuclear Magnetic Resonance Spectroscopy (NMR) of quadrupolar (spin <jats:italic>I<\/jats:italic> &gt; 1\/2) nuclei with half integer spins in solids, particularly clays and other layered materials, have been reviewed. The advent of Multiple-Quantum (MQ) Magic-Angle Spinning (MAS) NMR spectroscopy has been a step-change development to the studies of quadrupolar nuclei in solids. It is now possible to record high-resolution spectra of important nuclei, such as <jats:sup>11<\/jats:sup>B, <jats:sup>17<\/jats:sup>O, <jats:sup>23<\/jats:sup>Na, <jats:sup>27<\/jats:sup>Al and <jats:sup>69,71<\/jats:sup>Ga, in synthetic and natural clays. Since its introduction in 1995 MQMAS NMR has evolved considerably and, at present, a range of very useful related techniques are available and have been reviewed, as has the current situation with regard to applications to clays and other layered materials.<\/jats:p>","DOI":"10.1180\/0009855033830094","type":"journal-article","created":{"date-parts":[[2004,1,15]],"date-time":"2004-01-15T01:54:10Z","timestamp":1074131650000},"page":"259-278","source":"Crossref","is-referenced-by-count":11,"title":["Novel nuclear magnetic resonance techniques for the study of quadrupolar nuclei in clays and other layered materials"],"prefix":"10.1180","volume":"38","author":[{"given":"J .","family":"Rocha","sequence":"first","affiliation":[]},{"given":"C. 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