Magnetization reversal in weak ferrimagnets and canted antiferromagnets

Magnetic ordering in dihydrated formates M(HCOO)2 · 2H2O, M = Mn, Fe, Co, Ni: DC magnetization study

“…This contrasts with the situation for the other formates where the coupling was found to be antiferromagnetic. It is currently believed that the magnetic structure of nickel formate is composed of two canted antiferromagnetic sublattices leading to weak ferrimagnetism . The magnitude of the magnetic moment of B ions is much smaller than that of A ions .…”

Role of t2g versus eg Interactions in the Physical Properties of A2OBO3 (A = Mn, Fe)

“…This remarkable effect of magnetization reversal has been observed in different materials, in which two different spin-canting mechanisms tend to align the moments in an opposite direction . For example, in YVO 3 , the competition between single ion anisotropy and antisymmetric Dzyaloshinsky−Moriya interaction reverses the magnetization along different crystallographic directions. , Although this could be the source of magnetization reversal in Fe 2 OBO 3 , the competition between inter-ribbon versus intra-ribbon exchange interaction of different signs (and temperature dependences) cannot be discarded.…”

Morphology Control Studies of MnTiO3 Nanostructures with Exposed {0001} Facets as a High-Performance Catalyst for Water Purification

“…The peak positions for Mn 2p 3/2 and Mn 2p 1/2 were observed at binding energies of 640.2 and 652.5 eV, respectively, along with two satellite peaks at 646.0 and 657.8 eV. The main peak of Mn 2p 3/2 is split into two with splitting width about 1.2 eV because of the existence of the large magnetic moment. , However, it is generally accepted that multiple valence oxidation states (Mn 2+ , Mn 3+ , and Mn 4+ ) may exist in manganese oxides so that Mn 2p usually reveals overlap of energy ranges for the various oxidation states of manganese . It is difficult to identify the oxidation states of manganese only by the binding energy shift and peak fitting of Mn 2p .…”