Spin Frustration in Double Perovskite Oxides and Oxynitrides: Enhanced Frustration in La₂MnTaO₅N with a Large Octahedral Rotation.

ABSTRACT: The B-site sublattice in the double perovskite oxides A₂BB'O₆ (B: magnetic cation; B': nonmagnetic cation) causes spin frustration, but the relationship between the structure and spin frustration remains unclear although a number of compounds have been studied. The present study systematically investigated A₂Mn^IIB'O₆ (S = 5/2) and found that the frustration factor, defined by f = |θ_W|/T_N (θ_W: Weiss temperature; T_N: Néel temperature), scales linearly with the tolerance factor t, i.e., octahedral rotation. Unexpectedly, La₂MnTaO₅N (space group: P2₁/n) synthesized under high pressure is more frustrated (f =

SUBMITTER: Ishida K 

PROVIDER: S-EPMC10494547 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature