Production And Electrochemical Properties Of Limn2o4 Thin Films Via A Proteic Sol-gel Process

LiMn2O4 thin films were obtained by a proteic sol-gel process using the coconut water as solvent of salts. X-ray diffractions showed a spinel phase with Fd3m space group. The capacity of lithium charge was 37 mAh/cm2-μm for thin film annelead at 800°C.20-21242246Thackeray, M.M., Yang, S.-H., (1998) Electrochemical and Solid State Letters, 1, p. 7Lee, Y.-S., Sun, Y.-K., Nahm, K.-S., (1998) Solid States Ionics, 109, p. 285Choi, S., Manthiram, A., (2000) Journal of Electrochemical Society, 147, p. 1623Gummow, R.J., De Kock, A., Thackeray, M.M., (1994) Solid States Ionics, 69Park, Y.J., Kim, J.G., Kim, M.K., (1998) Journal of Power Sources, 76, p. 41Macedo, M.A., (1998), Brazilian Patent , 9804719.1Duque, J.G., Macedo, M.A., Moreno, N.O., (2000) Physica Status Solidi B, 200, p. 413Duque, J.G., Macedo, M.A., Moreno, N.O., Lopez, J.L., Pfanes, H.D., (2001) Journal of Magnetismand Magnetic Materials, 226-232, p. 1424Montes, P.J., Valério, M.E.G., Macedo, M.A., Cunha, F., Sasaki, J.M., (2003) Microelectronics Journal, 34, p. 557Meneses, C.T., Macedo, M.A., Vicentin, F.C., (2003) Microelectronics Journal, 34, p. 561Santos, J.V.A., Macedo, M.A., Cunha, F., Sasaki, J.M., Duque, J.G.S., (2003) Microelectronics Journal, 34, p. 565Palacín, M.R., Tarascon, J.M., (2000) Journal of Electrochemical Society, 147, p. 84

Preparation Of Nife 2o 4 Thin Films By A New Route Sol-gel

NiFe 2O 4 thin films were prepared using new route sol-gel process. The films were heated at 300°C for 5 min. The magnetic properties were also determined at room temperature by applying magnetic fields up to 4 kOe perpendicular to the surface of the samples by means of a SQUID magnetometer.Chen, K.C., (1986) Mater. Res. Soc. Symp. Porc., 73, p. 731Miroslav, S., Ladislav, P., (1991) Ceramics International, 21, p. 21Duque, J.G.S., (2000) Phys. Stat. Sol. (b), 220, p. 413Duque, J.G.S., (2001) J. Magn. Magn. Mater., 226-230, p. 1424Guyot, M., (1996) Applied Surface Science, 96-98, p. 80