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- Title
Single-Ion Magnetism in a Luminescent Er<sup>3+</sup> β-Diketonato Complex with Multiple Relaxation Mechanisms.
- Authors
Martín‐Ramos, Pablo; Ramos Silva, Manuela; Coutinho, Joana T.; Pereira, Laura C. J.; Chamorro‐Posada, Pedro; Martín‐Gil, Jesús
- Abstract
In the crystal structure of tris(2 ,2,6,6-tetramethyl-3,5-heptanedionato)mono(bathophenanthroline)erbium(III), C57H73ErN2O6, the Er3+ ion is in an antiprismatic environment, surrounded by two N atoms and six O atoms. The β-diketonato 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 UFR/ kB = 15.6 K and USR/ kB = 22.4 K and relaxation times of 10-6 and 10-4 s, respectively. The Er3+ compound is luminescent in the solid state, emitting in the near IR region.
- Subjects
ERBIUM; CHEMICAL relaxation; LIGANDS (Chemistry); CRYSTAL structure research; MAGNETIC fields
- Publication
European Journal of Inorganic Chemistry, 2014, Vol 2014, Issue 3, p511
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201301076