Synthesis, Structure, and Magnetic Properties of Cyanurates RE 5(C3N3O3)(OH)12 (RE = Gd–Lu): Cryogenic Magnetocaloric Candidate Gd5(C3N3O3)(OH)12

Rare-earth (RE)-based frustrated magnets are fertile playgrounds for discovering exotic quantum phenomena and exploring adiabatic demagnetization refrigeration applications. Here, we report the synthesis, structure, and magnetic properties of a family of rare-earth cyanurates RE 5(C3N3O3)­(OH)12 (RE...

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Veröffentlicht in:Inorganic chemistry 2024-07, Vol.63 (29), p.13171-13175
Hauptverfasser: Wang, Tianyu, Guo, Ruixin, Liu, Qingxiong, Wu, Qian, Meng, Xianghe, Zhou, Zhengyang, Guo, Shu, Xia, Mingjun
Format: Artikel
Sprache:eng
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Zusammenfassung:Rare-earth (RE)-based frustrated magnets are fertile playgrounds for discovering exotic quantum phenomena and exploring adiabatic demagnetization refrigeration applications. Here, we report the synthesis, structure, and magnetic properties of a family of rare-earth cyanurates RE 5(C3N3O3)­(OH)12 (RE = Gd–Lu) with an acentric space group P6̅2m. Magnetic susceptibility χ­(T) and isothermal magnetization M(H) measurements manifest that RE 5(C3N3O3)­(OH)12 (RE = Gd, Dy–Yb) compounds exhibit no magnetic ordering down to 2 K, while Tb5(C3N3O3)­(OH)12 shows long-range magnetic ordering around 3.6 K. Among them, magnetically frustrated spin-7/2 Gd5(C3N3O3)­(OH)12 shows long-range magnetic ordering around 1.25 K and a large magnetocaloric effect with a maximum magnetic entropy change ΔS m of up to 58.1 J kg–1 K–1 at ΔH = 7 T at liquid-helium temperature regimes.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.4c01569