Magnetic behaviour of a spin-canted asymmetric lanthanide quinolate trimer
Batista, Lester; Paul, Sagar 1; Molina-Jirón, Concepción 2; Jaén, Juan A.; Fenske, Dieter 3; Fuhr, Olaf
3,4; Ruben, Mario 2,3; Wernsdorfer, Wolfgang 1,2; Moreno-Pineda, Eufemio 1
1 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)
3 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
4 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)
3,4; Ruben, Mario 2,3; Wernsdorfer, Wolfgang 1,2; Moreno-Pineda, Eufemio 11 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)
3 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
4 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)
Abstract:
An asymmetrical dysprosium trimer with a molecular formula of [Dy$_3$ (hq)$_7$(hqH)(NO$_3$)$_2$ (H$_2$O)] was
obtained through a reflux reaction employing as starting material Dy(NO$_3$)$_3$·nH$_2$O and 8-quinolinoline as
ligand. Magnetic susceptibility investigations show the system to be an SMM, which was corroborated by
sub-Kelvin μSQUID studies. Upon cooling, the magnetic susceptibility also exhibits a decrease in the χMT
product, which was confirmed to be due to intramolecular antiferromagnetic interactions. μSQUID
measurements, moreover, reveal a marked magnetic behaviour in the angular dependence of the hyster-
esis loops. The latter is a direct consequence of the non-colinear spin arrangement of the anisotropy axes
of each Dy( III) ion in [Dy$_3$ (hq)$_7$(hqH)(NO$_3$ ) $_2$(H$_2$O)] and the interaction between the ions, as also evidenced
by CASSCF calculations. Our results evidence the effect of spin canting along with the intramolecular
interactions, which can induce non-trivial magnetic behaviour in SMMs.
obtained through a reflux reaction employing as starting material Dy(NO$_3$)$_3$·nH$_2$O and 8-quinolinoline as
ligand. Magnetic susceptibility investigations show the system to be an SMM, which was corroborated by
sub-Kelvin μSQUID studies. Upon cooling, the magnetic susceptibility also exhibits a decrease in the χMT
product, which was confirmed to be due to intramolecular antiferromagnetic interactions. μSQUID
measurements, moreover, reveal a marked magnetic behaviour in the angular dependence of the hyster-
esis loops. The latter is a direct consequence of the non-colinear spin arrangement of the anisotropy axes
of each Dy( III) ion in [Dy$_3$ (hq)$_7$(hqH)(NO$_3$ ) $_2$(H$_2$O)] and the interaction between the ions, as also evidenced
by CASSCF calculations. Our results evidence the effect of spin canting along with the intramolecular
interactions, which can induce non-trivial magnetic behaviour in SMMs.
| Zugehörige Institution(en) am KIT | Institut für Nanotechnologie (INT) Institut für QuantenMaterialien und Technologien (IQMT) Karlsruhe Nano Micro Facility (KNMF) Physikalisches Institut (PHI) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsdatum | 06.08.2024 |
| Sprache | Englisch |
| Identifikator | ISSN: 1477-9226, 0300-9246, 1364-5447, 1472-7773, 1477-9234, 2050-5671 KITopen-ID: 1000173665 |
| HGF-Programm | 47.12.02 (POF IV, LK 01) Exploratory Qubits |
| Weitere HGF-Programme | 43.32.01 (POF IV, LK 01) Molecular Materials Basis for Optics & Photonics |
| Erschienen in | Dalton Transactions |
| Verlag | Royal Society of Chemistry (RSC) |
| Band | 53 |
| Heft | 31 |
| Seiten | 12927–12935 |
| Vorab online veröffentlicht am | 16.07.2024 |
| Nachgewiesen in | OpenAlex Web of Science Dimensions Scopus |