Anomalous Metamagnetic-like Transition In A Ferh/fe3pt Interface Occurring At T ≈ 120 K In The Field-cooled-cooling Curves For Low Magnetic Fields

We report on the magnetic properties of a special configuration of a FeRh thin film. An anomalous behavior on the magnetisation vs. temperature was observed when low magnetic fields are applied in the plane of a thin layer of FeRh deposited on ordered Fe3Pt. The anomalous effect resembles a metamagnetic transition and occur only in the field-cooled-cooling magnetisation curve at temperatures near 120 K in samples without any heat treatment. Copyright 2012 Author(s).23Kouvel, J.S., Hartelius, C.C., (1962) J. Appl. Phys., 33, p. 1343Kouvel, J.S., (1966) J. Appl. Phys., 37, p. 1257Lommel, J.M., Kouvel, J.S., (1967) J. Appl. Phys., 38, p. 1263Kubaschewski, O., (1982) IRON-Binary Phase Diagrams, , Springer, BerlinKang, K., Moodenbaugh, A.R., Lewis, L.H., (2007) Appl. Phys. Lett., 90, p. 153112Marquina, C., Ibarra, M.R., Algarabel, P.A., Hernando, A., Crespo, P., Agudo, P., Yavari, A.R., Navarro, E., (1997) J. Appl. Phys., 81, p. 2315Maat, S., Thiele, J.U., Fullerton, E.E., (2005) Phys. Rev. B, 72, p. 214432Ibarra, M.R., Algarabel, P.A., (1994) Phys. Rev. B, 50, p. 4196Annaorazov, M.P., Nikitin, S.A., Tyurin, A.L., Asatryan, K.A., Dovletov, A.K., (1996) J. Appl. Phys., 79, p. 1689Thiele, J.-U., Maat, S., Fullerton, E.E., (2003) Appl. Phys. Lett., 82, p. 28597Tajima, K., Endoh, Y., Ishikawa, Y., Stirling, W.G., (1976) Phys. Rev. Lett., 37, p. 519Kisker, E., Wassermann, E.F., Carbone, C., (1987) Phys. Rev. Lett., 58, p. 1784Alp, E.E., Ramanathan, M., SalemSugui, S., Oliver, F., Stojanoff, V., Siddons, D.P., (1992) Rev. Sci. Instrum., 63, p. 1221Noce, R.D., De Oliveira, J.E., Cornejo, D.R., Barthem, V.M.T.S., Givord, D., Benedetti, A.V., Abstracts of the 61st Annual Meeting of the International Society of Electrochemistry, (2010), Nice, FranceTabakovic, I., Riemer, S., Vas'ko, V., Kief, M., (2008) Electrochim. Acta, 53, p. 2483Schulz, E.N., Salinas, D.R., Garcia, S.G., (2010) Electrochem. Commun., 12, p. 583Lutterotti, L., (2010) Nucl. Instrum. Methods B, 268, p. 334not

Direct electrodeposition of hydrogenated reduced graphene oxide from unsonicated solution and its electrochemical response

Reduced graphene oxide (rGO) is successfully electrodeposited from a graphene oxide-containing suspension under stirring and no sonication onto Ni foam by applying -1.5 V/SCE. The electrodeposited material is characterized by X-Ray Diffraction (XRD), Scanning electron microscopy (SEM), Raman spectroscopy, Fourier Transform Infra-Red spectroscopy (FTIR) and Thermogravimetric analysis (TGA). FTIR and TGA results indicate the formation of hydrogenated rGO after electrodeposition. In addition, the electrochemical response of the rGO/Ni electrode is evaluated by cyclic voltammetry in 1 M potassium hydroxide solution. The results reveal that the electrode possesses higher conductivity and lower polarization loss compared to bare Ni foam, opening wider perspectives to design composites with improved electrochemical performance.info:eu-repo/semantics/publishedVersio