Electrical Resistivity of YFe₂O₄

Insulator to semiconductor transition and magnetic properties of the one-dimensionalS=12systemIn2Möller1, Taetz2, Hollmann3 et al. 2007Phys. Rev. B135100View full textAdd to dashboardCite

“…However, in the presence of anisotropic magnetic interactions, such as e.g. the DzyaloshinskiiMoriya interaction, different spin states can be mixed and the resonance between them may become visible 19 . In this scenario the excitation gap f 0 ∼ 100 GHz is a measure of the energy separation between the S t = 1/2 and S t = 3/2 states of the triangle.…”

Characterization of competing distortions inYFe2O4

“…Second, this is the material exhibiting the widest oxygen nonstoichiometry range, being the physical properties very sensitive to it [16]. Finally, this is the only member in this family of compounds showing two sharp anomalies in the electric resistivity at the CO transition in analogy to other systems with similar transitions such as magnetite or nickelates [17][18][19][20]. Nevertheless, the determination of the distorted YFe 2 O 4 structure below the CO transition has remained incomplete as it is a very challenging task.…”

Strong local lattice instability in hexagonal ferritesRFe2O4(R= Lu,Y,Yb) revealed by x-ray absorption spe

“…The occurrence of ferroelectricity below 320 K and ferrimagnetism at 240 K would make this compound very interesting due to the possible coupling between these two degrees of freedom [8]. On heating, YFe 2 O 4 shows two metal-insulator transitions at T N ß 240 K and T L ß 220 K that are accompanied by crystal distortions to monoclinic and triclinic, respectively, and below T N the iron ions couple antiferrimagnetically [1,9,10]. These transitions show a large thermal hysteresis, and the temperatures shift to * lafuerza@unizar.es T N ß 230 K and T L ß 180 K on cooling.…”