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The \u03b2\u2010diketonato ligands show structural disorder. The ac susceptibility studies conducted at frequencies from 33 to 9995 Hz and at temperatures from 1.7 to 10 K revealed that the application of a static magnetic field induces a slow magnetic relaxation. Two relaxation modes (fast relaxation = FR; slow relaxation = SR) could be distinguished with energy barriers <jats:italic>U<\/jats:italic><jats:sub>FR<\/jats:sub>\/<jats:italic>k<jats:sub>B<\/jats:sub><\/jats:italic> = 15.6 K and <jats:italic>U<\/jats:italic><jats:sub>SR<\/jats:sub>\/<jats:italic>k<jats:sub>B<\/jats:sub><\/jats:italic> = 22.4 K and relaxation times of 10<jats:sup>\u20136<\/jats:sup> and 10<jats:sup>\u20134<\/jats:sup> s, respectively. The Er<jats:sup>3+<\/jats:sup> compound is luminescent in the solid state, emitting in the near IR region.<\/jats:p>","DOI":"10.1002\/ejic.201301076","type":"journal-article","created":{"date-parts":[[2013,12,4]],"date-time":"2013-12-04T08:14:37Z","timestamp":1386144877000},"page":"511-517","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Single\u2010Ion Magnetism in a Luminescent Er<sup>3+<\/sup> \u03b2\u2010Diketonato Complex with Multiple Relaxation Mechanisms"],"prefix":"10.1002","volume":"2014","author":[{"given":"Pablo","family":"Mart\u00edn\u2010Ramos","sequence":"first","affiliation":[]},{"given":"Manuela","family":"Ramos Silva","sequence":"additional","affiliation":[]},{"given":"Joana T.","family":"Coutinho","sequence":"additional","affiliation":[]},{"given":"Laura C. 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