Coexisting commensurate and incommensurate magnetic orders in the double double perovskite CaMnCoWO 6
Coexisting commensurate and incommensurate magnetic orders in the double double perovskite CaMnCoWO 6
复制标题
双双钙钛矿 CaMnCoWO 6 中共存的相称和不相称磁序
DOI:
10.1002/zaac.202300047
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Ji K
中科院分区:
文献类型:
--
作者:
Ji K
A new double double perovskite of ideal composition CaMnCoWO6has been synthesised at high pressure. The structure is tetragonal (P42/n,a=7.6651(3),c=7.6822(3) Å) and disorder between A‐site Mn2+and B‐site Co2+leads to a Co‐rich off‐stoichiometric composition CaMn0.8Co1.2WO6[Ca(Mn0.65Co0.35) (Co0.86Mn0.14)WO6]. An unusual combination of commensurate and incommensurate spin orders (A‐site Mn/Co spins with propagation vector (0.5 0.5 0.5) and B‐site Co/Mn spins with (0.5 0.42 0.5)) is observed below a magnetic transition atTC=18 K. This is the first discovery of complex magnetism in the double double perovskite family.