Ferrites lithium

Good results are obtained with oxide-coated valve metals as anode materials. These electrically conducting ceramic coatings of p-conducting spinel-ferrite (e.g., cobalt, nickel and lithium ferrites) have very low consumption rates. Lithium ferrite has proved particularly effective because it possesses excellent adhesion on titanium and niobium [26]. In addition, doping the perovskite structure with monovalent lithium ions provides good electrical conductivity for anodic reactions. Anodes produced in this way are distributed under the trade name Lida [27]. The consumption rate in seawater is given as 10 g A ar and in fresh water is... 

Lithium ferrite itself (x = 0.5) has a high Curie temperature and can be fabricated so as to give a square hysteresis loop satisfactory for digital-computer memory cores. In this application, the dielectric losses connected with the presence of mobile charge carriers can cause a dramatic loss in core quality. The mobile carriers may be introduced by... 

Waychunas, G. A. Mossbauer. X-Ray. Optical, and Chemical Study of Cation Arrangement and Defect Association in Fm3m.Solid Solutions in the System Periclae-Wustite-Lithium Ferrite Ph.D. Thesis U.C.L.A., Los Angelos, 1981. 

Lithium ferrite LiFeOz is also a typical mixed compound with a lattice the same as that of NaCl in which, in place of the sodium ions, the lithium and iron ions are distributed arbitrarily over the lattice points in question. 

Femandes-Rodriges, Morales, Tirado synthesized mechanochemically lithium ferrite and lithium cobaltite from lithium hydroxide and corresponding oxihydroxide 5-FeOOH or CoOOH [37]. Similarly, barium hexaferrite BaFei20i9, including that doped with titanium and cobalt, was obtained from Ba(0H)2-H20 and y-FeOOH [38]. 

Karagedov G.R., Konovalova E.A., Startzev S.I., Lyakhov N.Z. Mechanochemical synthesis of lithium ferrites. Proc. All-Union Conf. Mechanochemical synthesis , Vladivostok, 1990. 

Nalbandyan, V.B., and Shukaev, I.L., New modification of lithium ferrite and the morphotropic series AFe02, Russ. J. Inorg. Chem., 32, 808, 1987. 

Tabuchi M, Tsutsui S, Masquelier C, Kanno R, Ado K, Matsubara I, Nasu S, Kageyama H (1998) Effect of cation arrangement on the magnetic properties of lithium ferrites (LiFe02 prepared by hydrothermal reaction and post-annealing method). J Solid State Chem 140 159-167... 

Lithium ferrite LiFe,0, Spinel type, cubic Hll, cF56 (Z = 8) Fd3m 0.39 670... 

Tretyakov Yu D, Rapp R (1969) Nonstoichiometries und defect structures in pure nickel oxide and lithium ferrite. Trans Met Soc AIME 245 1235... 

By measuring oxygen activity as a function of 5 in lithium ferrite, LiFCjOg-a, and using a mass action law treatment, Tretyakov and Rapp deduced that the defects responsible for the apparent oxygen deficiency were lithium interstitials. The reaction may be written as follows ... 

---