Magnetic Behavior of the LiFeTiO₄ Spinel

Abstract

The LiFeTiO4 spinel obtained by the “liquid mix” technique has been studied by neutron powder diffraction, ac and dc magnetic susceptibility, and magnetization measurements. The cationic distribution in the tetrahedral (A) and octahedral (B) sites was determined to be (Li0.47Fe0.53)A(Li0.53Fe0.47Ti)BO4. The dc magnetic susceptibility measurements show two maxima at 29 and 282 K (at H = 1000 Oe) and a Curie−Weiss behavior is not observed in the temperature range 282−800 K. Neutron diffraction patterns shows that the B-site magnetic moments at 2 K temperature are lower than those expected for a collinear arrangement of spins. Careful analyses of the low-temperature neutron diffraction patterns of this material suggest a localized canting of spins (LCS) type of magnetic ordering where a long-range order (LRO) of longitudinal component of moments coexists along with a totally disordered transverse component of moments. The conclusion is also supported by the features seen in complementary magnetic measurements.

Coexistence of sign reversal of both magnetization and exchange bias field in the core-shell type La0.2Ce0.8CrO3 nanoparticles

“…[8][9][10][11] On the other hand, system like FeF 2 / Ni multilayers exhibited the sign reversal of magnetization but the temperature dependent sign-reversal of 0 H eb was not observed. 12 Other than multilayers, the temperatureinduced sign reversal of magnetization was also reported in polycrystalline materials such as ferrites, 13 perovskite orthochromates, 14,15 orthovanadates, 16 molecular magnets, 7,17 manganites, 18 and double perovskite ruthenates. 19 Out of these polycrystalline materials, only La 0.5 Pr 0.5 CrO 3 ͑Ref.…”

Novel Single‐Crystal‐to‐Single‐Crystal Anion Exchange and Self‐Assembly of Luminescent d10 Metal (CdII, ZnII, and CuI) Complexes Containing C3‐Symmetrical Ligands

“…Thus ferrimagnetic spinels seem to be promising candidates as MC materials and complementary studies need to be explored on these ceramics. In this sense, among others, the solid solution Li (4 ‐ x ) Ti (5 ‐ 2 x ) Fe 3 x O 12 with spinel structure exhibits very interesting magnetic properties 9. These properties can be modulated by the introduction of diamagnetic M 4+ cations that modifies the collinear arrangement of spins, provoking a noticeable enhancement of the saturated magnetic moments.…”

Tunable Ferrites as Environmentally Friendly Materials for Energy‐Efficient Processes

“…In this sense, among others, the solid solution Li (4 − x ) Ti (5 − 2 x ) Fe 3 x O 12 with spinel structure exhibits very interesting magnetic properties. [ 9 ] These properties can be modulated by the introduction of diamagnetic M 4 + cations that modifi es the collinear arrangement of spins, provoking a noticeable enhancement of the saturated magnetic moments. Therefore, we have been deeply attracted to analyzing, evaluating and optimizing the possible MC response of several mixed oxides whose magnetic behavior has shown them to be potential candidates for applications in magnetic refrigeration.…”