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Single-molecule magnet behavior in 2,2 '-bipyrimidine-bridged dilanthanide complexes

Yu, W.; Schramm, F.; Moreno Pineda, E.; Lan, Y.; Fuhr, O.; Chen, J.; Isshiki, H.; Wernsdorfer, Wolfgang; Wulfhekel, W.; Ruben, M.

A series of 2,2’-bipyrimidine-bridged dinuclear lanthanide complexes with the general formula [Ln(tmhd)3]2bpm (tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionate, bpm = 2,2’-bipyrimidine, Ln = Gd(III), 1; Tb(III), 2; Dy(III), 3; Ho(III), 4 and Er(III), 5) has been synthesized and characterized. Sublimation of [Tb(tmhd)3]2bpm onto a Au(111) surface leads to the formation of a homogeneous film with hexagonal pattern, which was studied by scanning tunneling microscopy (STM). The bulk magnetic properties of all complexes have been studied comprehensively. The dynamic magnetic behavior of the Dy(III) and Er(III) compounds clearly exhibits single molecule magnet (SMM) characteristics with an energy barrier of 97 and 25 K, respectively. Moreover, micro-SQUID measurements on single crystals confirm their SMM behavior with the presence of hysteresis loops.

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DOI: 10.5445/IR/1000053223
DOI: 10.3762/bjnano.7.15
Zitationen: 16
Web of Science
Zitationen: 15
Cover der Publikation
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2016
Sprache Englisch
Identifikator ISSN: 2190-4286
KITopen-ID: 1000053223
HGF-Programm 43.21.04 (POF III, LK 01)
Molecular Engineering
Erschienen in Beilstein journal of nanotechnology
Band 7
Seiten 126-137
Schlagwörter bipyrimidine, diketone, hysteresis, lanthanide, magnetism
Nachgewiesen in Web of Science
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