A Spin Frustrated Hourglass <b>{Gd</b>_<b>9</b><b>}</b> Molecular Nanomagnet with Unusual Magnetocaloric Properties.

ABSTRACT: We report a highly symmetric {Gd₉} molecular nanocage with the formula [Gd₉(BA)₁₆(OH)₁₀]Cl·3(C₂H₅OH)·4(H₂O), which crystallizes in the cubic space group Pn3̅n. The structure features two crystallographically distinct Gd³⁺ ions, forming highly regular triangular Gd³⁺ arrangements leading to a geometrically frustrated magnetic network. Magnetization measurements at 2 K reveal a broad plateau between 1.5 and 4 T, while zero-field heat capacity shows a Schottky anomaly centered at 0.6 K─indicative of low-lying excited states and competing magnetic interactions. The magnetocaloric effect, evaluated through both direct and indirect methods, exhibits a re-entrant p

SUBMITTER: Panguluri SPK 

PROVIDER: S-EPMC12673592 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature