التفاصيل البيبلوغرافية
| العنوان: |
Wheel-like Gd42 polynuclear complexes with significant magnetocaloric effect. |
| المؤلفون: |
Che, Zi-Wei, Chen, Ji-Tun, Wang, Tian-Tian, Yan, Han, Zhou, Teng-Da, Guo, Rui, Sun, Wen-Bin |
| المصدر: |
CrystEngComm; 5/14/2022, Vol. 24 Issue 18, p3363-3368, 6p |
| مصطلحات موضوعية: |
MAGNETIC cooling, MAGNETOCALORIC effects, THERMAL stability, MANGANESE alloys |
| مستخلص: |
Two novel wheel-like lanthanide nanoclusters with 42 nuclearity [Ln42L14(OH)28(OAc)84] (abbreviated as Ln42; Ln = 1-Gd, 2-Dy; HL = 3-methoxysalicylaldehyde O-vanillin) were structurally and magnetically characterized. The Ln42 species were constructed from O-vanillin and lanthanide acetate, in which a big cylindrical cavity formed with the external and internal diameters of the wheels in the clusters being about 3.6 nm and 1.5 nm, respectively. Both 1-Gd and 2-Dy exhibit high thermal stability and decompose above 320 °C. Strikingly, the Gd42 congener displayed significant magnetic refrigeration, the high isotropy Gd nuclearity and weak ferromagnetic interaction between adjacent Gd3+ ions lead to a large magnetocaloric effect (MCE) with −ΔSmmax = 42.60 J kg−1 K−1. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
