Yang C, Jin L, Xie W, Cava RJ. Stuffed Rare-Earth Garnets.
Inorg Chem 2023;
62:21364-21370. [PMID:
38052094 DOI:
10.1021/acs.inorgchem.3c03453]
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Abstract
We report the synthesis and magnetic characterization of stuffed rare-earth gallium garnets, RE3+xGa5-xO12 (RE = Lu, Yb, Er, Dy, Gd), for x up to 0.5. The excess rare-earth ions partly fill the octahedral sites normally fully occupied by Ga3+, forming disordered pairs of corner-shared face-sharing magnetic tetrahedra. The Curie-Weiss constants and observed effective moments per rare-earth are smaller than are seen for the unstuffed gallium garnets. No significant change in the field-dependent magnetization is observed but missing entropy is seen when integrating the heat capacity down to 0.5 K.
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