First-principles study of magnetization reorientation and large perpendicular magnetic anisotropy in CuFe2O4/MgO heterostructures

Electrically Driven Magnetization Reorientation at the Fe/PbTiO3 Interface

“…As shown in Figure a, MCA change upon polarization reversal is exclusive for the interface layers, including Fe­(I), Fe­(I+1), and Pb­(I) (which are indicated in Figure a), whereas those of the center layers in Fe and PTO are rather small. Previous calculations reported that Fe exhibits larger PMA when in contact with the oxide surface through the p z –d z 2 hybridization. , This is also the case for Fe/PTO when P ↓ ; PMA comes from the Fe­(I) and Fe­(I+1) layers. While these PMA concentrations are reduced greatly for P ↑ , Pb­(I) provides a large contribution to negative MCA.…”

“…The former value is notably smaller than that (2.145 Å) in bulk FeO. 29 Thus, for P ↓ , substantial interface effects of the electric depolarization 1−3,8,30 and orbital hybridization between the Fe 3d and O 2p states 31,32 are expected, as addressed in the following paragraphs.…”

Magnetoelectric coupling induced by Jahn–Teller Cu2+ in SrFe12O19 ceramics

“…Compared with Fe 3+ , Cu 2+ possesses negative single-ion anisotropy in the spinel structure 15 and larger spin–orbit coupling (SOC) due to its Jahn–Teller effect. 20,21 Therefore, Cu 2+ in S/S* blocks can change the magnetic interaction of the blocks and enhance the local DM interaction, which thus destroy the uniaxial magnetocrystalline anisotropy of SrFe 12 O 19 .…”

Corrosion Protection Oxide Scale Formed on Surface of Fe-Ni-M (M = Al, Cr, Cu) Inert Anode for Molten Salt Electrolysis

“…The equilibrium lattice parameters, formation energies, and cohesive energies of the normal and inverse spinel compounds are listed in Table 1 [34][35][36][37][38][39]. To evaluate the structural stability, the formation energy (E form ) and cohesive energy (E coh ) of the spinel compounds were calculated as follows [40]:…”