Artículo
SMM Behaviour of the Butterfly {CrIII2DyIII2} Pivalate Complex and Magneto-structurally Correlated Relaxation Thermal Barrier
Mecchia Ortiz, Juan Hugo
; Cabrosi, Raquel Daiana Jacqueline
; Carrella, Luca M.; Rentschler, Eva; Alborés, Pablo
![Icon](/themes/CONICETDigital/images/conicet.png)
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Fecha de publicación:
09/2022
Editorial:
Wiley VCH Verlag
Revista:
Chemistry- A European Journal
ISSN:
0947-6539
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We are reporting the synthesis, single-crystal X-ray structure characterization, and magnetic property investigations of the pivalate butterfly {CrIII2LnIII2} complexes with Ln= Gd and Dy and the isostructural Y(III) sample. We found an anti-ferromagnetic Cr(III)-Ln(III) exchange interaction, which, as previously observed in related Cr(III)/Ln(III) systems, plays a key role in suppressing quantum tunnelling of magnetization and enhances the SMM performance in the Dy(III) complex. In fact, a pure Orbach relaxation mechanism, with absence of QT regime, is observed with a thermal barrier of 50 cm−1, leading to magnetization hysteresis opening, measured with a commercial magnetometer, up to 3.6 K with a coercive field of 2.9 T. Analysis of SMM behaviour in literature-known butterfly {CrIII2DyIII2} complexes, reveals the existence of a magneto-structural correlation between Ueff, the thermal barrier size, and the mean Cr−Dy bond distances. Moreover, a clear correlation is found for the thermal barrier magnitude and the maximum temperature hysteresis opening and coercive field.
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Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Mecchia Ortiz, Juan Hugo; Cabrosi, Raquel Daiana Jacqueline; Carrella, Luca M.; Rentschler, Eva; Alborés, Pablo; SMM Behaviour of the Butterfly {CrIII2DyIII2} Pivalate Complex and Magneto-structurally Correlated Relaxation Thermal Barrier; Wiley VCH Verlag; Chemistry- A European Journal; 28; 59; 9-2022; 1-12
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