Influence of the synthesis route on the formation of 12R/10H-polytypes and their magnetic properties within the Ba(Ce,Mn)O₃family

Abstract

A selective synthesis of 12R/10H polytypes within the Ba–Ce–Mn–O family can be induced by a Mn precursor.

Aging Mechanisms of Electrode Materials in Lithium-Ion Batteries for Electric Vehicles

“…The shapes of the superstructure phase of the lithium at = 0.5 [20] and the double hexagonal phase [21] must be maintained for the purpose of achieving good cycling stability. Some measures, such as the partial replacement of manganese ions by excess lithium and/or by divalent or trivalent cations such as Al, Mg, Co, and Cr [22][23][24][25][26][27][28][29][30][31][32], can be adopted to diminish the molar volume changes of particles during the cycle to improve the capacity retention.…”

Probing Electronic and Structural Transformations during Thermal Reduction of the Promising Water Splitting Perovskite BaCe0.25Mn0.75O3

“…Specifically, the 12R-BCM structure is FM within the ab plane and AF along the c axis, which is consistent with the literature. 42 We repeated the above simulation procedure on two twinning structural models determined by the experiments that are called the Mn2-twin and Mn4-twin. These Mn2 and Mn4 clusters also form AF spin ordering with FM interactions within the ab plane and along the c axis.…”

Molecule-like cluster magnetism and cationic order in the new hexagonal perovskite Ba4Sn1.1Mn2.9O12

“… 26 ) and Ba 4 CeMn 3 O 12 (ref. 29 ) undergoes an AFM transition at T N = 4–6 K. The Ba 4 NbMn 3 O 12 sample experiences a ferrimagnetic transition at 42 K and an additional magnetic abnormality at ∼6 K. 27 The latter one should be AFM transition, as suggested by first-principle calculations. 30 Furthermore, Ba 4 NbMn 3 O 12 and Ba 4 Ti 2 Mn 2 O 12 show cluster magnetism, with linear Mn 3 (and Mn 2 ) magnetic clusters arranged in triangular plains, leading to magnetic frustrations.…”