Triple A-Site Cation Ordering in the Ferrimagnetic Y₂CuGaMn₄O₁₂ Perovskite.

ABSTRACT: A new member of A-site columnar-ordered A₂A'A″B₄O₁₂ quadruple perovskites with the composition of Y₂CuGaMn₄O₁₂ was prepared by a high-pressure, high-temperature method at 6 GPa and about 1500 K. Its crystal structure and cation distributions were studied by powder synchrotron X-ray and neutron diffraction. There is a triple A-site cation ordering with some degrees of anti-site disorder among sites occupied by 3d transition metals: [Y₂]_A[Cu_0.8Mn_0.2]_A'[Ga_0.8Mn_0.2]_A″[Mn_3.6Cu_0.2Ga_0.2]_BO₁₂. It has the space group P4₂/nmc (no. 137) between 1.5 and 873 K with a

SUBMITTER: Belik AA 

PROVIDER: S-EPMC9472281 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature