31P spin-lattice relaxation in cobalt-co
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G Mali; V Kauฤiฤ
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Article
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1998
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Elsevier Science
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English
โ 111 KB
Phosphorus spin-lattice relaxation was studied in aluminophosphate molecular sieves containing various concentrations of either framework or non-framework cobalt. The behaviour of nuclear magnetisation in the presence of these paramagnetic centres was described successfully in the limit of no spin-d