Molecule-like cluster magnetism and cationic order in the new hexagonal perovskite Ba₄Sn_1.1Mn_2.9O₁₂.

ABSTRACT: The new hexagonal perovskite phase of composition Ba₄Sn_1.1Mn_2.9O₁₂ has been synthesized by solid-state reactions at 1673 K. The crystal structure has been investigated using X-ray and neutron diffraction. The hexagonal perovskite structure has an ordered arrangement of Sn and Mn ions on the corner-sharing octahedral centers and the face-sharing octahedral centers respectively. Short Mn-Mn distances have been evidenced in the face-sharing trimer of MnO₆ octahedra. The magnetic susceptibility shows magnetic cluster behavior, with cluster formation temperature ∼220 K. Antiferromagnetic order has been observed at T _N ∼ 6 K. Ba₄Sn_1.1Mn_2.9O₁₂ is a semiconductor with a transport ac

SUBMITTER: Wu J 

PROVIDER: S-EPMC9044838 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature