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Crystallization Behavior, Microstructure and Magnetic Properties of B2O3-SiO2-Fe2O3-BaO-SrO Glass-Ceramics
M. Tavoosi, A. Ghasemi, D. Yousefi
Department of Materials Engineering, Malek-Ashtar University of Technology (MUT), Shahin-Shahr, Isfahan, Iran.
received August 30, 2016, received in revised form November 12, 2016, accepted November 22, 2016
Vol. 7, No. 4, Pages 469-476 DOI: 10.4416/JCST2016-00063
Abstract
The preparation and magnetic characterization of B2O3-SiO2-Fe2O3-BaO-SrO glass-ceramics were the goal of this study. In this regard, different mixtures of B2O3, SiO2, Fe2O3, BaO and SrO were melted in the temperature range 1200 – 1350 °C and were quenched between two sheets of cold steel. The as-quenched samples were annealed at 660 and 700 °C for 2 h. The prepared samples were then characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), differential scanning calorimetry (DSC) and a vibrating scanning magnetometer (VSM). According to the results obtained, fully amorphous phase can be formed in the 20B2O3-10SiO2-25Fe2O3-45BaO, 20B2O3-10SiO2-25Fe2O3-45SrO and 20B2O3-10SiO2-25Fe2O3-22.5BaO-22.5SrO systems. The coercivity and saturation of magnetizationof the as-quenched amorphous samples were estimated at about 120 – 380 Oe and 9 – 12 emu/g, respectively. The coercivity value increased during the annealing process as a result of precipitation of hard magnetic MFe12O19 phase from the amorphous matrix. Although, all of samples showed almost the same saturation of magnetization, the highest value of coercivity (4620 Oe) was achieved in 20B2O3-10SiO2-25Fe2O3-22.5SrO-22.5BaO sample with simultaneous presents of Sr and Ba.
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Keywords
Glass-ceramics, crystallization, magnetic materials, hexaferrite.
References
1 Sandu, V., Nicolescu, M.S., Kuncser, V., Damian, R., Sandu, E.: Magnetic glass-ceramics, J. Adv. Ceram., 1, 138 – 143, (2012).
2 Perry, C.H., Kinser, D.L., Wilson, L.K., Vaughn, J.G.: Magnetic exchange between Ti3+ ions in titanium phosphate glass, J. Appl. Phys., 50, 1601 – 1603, (1979).
3 Hu, F., Wei, X., Qin, Y., Jiang, S., Li, X., Zhou, S., Chen, Y., Duan, C.K., Yin, M.: Yb3+/Tb3+ co-doped GdPO4 transparent magnetic glass-ceramics for spectral conversion, J. Alloy. Compd., 674, 162 – 167, (2016).
4 Freibele, E.J., Koon, N.C.: Magnetization studies of amorphous antiferromagnetism in manganese phosphate glass, Solid State Commun., 14, 1247 – 1250, (1974).
5 Yousefi, D., Tavoosi, M., Ghasemi, A.: Magnetic properties of B2O3-SiO2-BaO-Fe2O3 glass-ceramics, J. Non-Cryst. Solids, 443, 1 – 7, (2016).
6 Ardelean, I., Ilonca, Gh., Peteanu, M., Pop, D.: Magnetic properties of x · MnO · (1-x) [19TeO2 · PbO] glasses, Solid State Commun., 3, 635 – 655, (1980).
7 Tanaka, K., Nakahara, Y., Hirao, K., Soga, N.: Preparation and magnetic properties of glass-ceramics containing magnetite microcrystals in calcium iron aluminoborate system, J. Magn. Magn. Mater., 168, 203 – 212, (1997).
8 Woltz, S., Hiergeist, R., Görnert, P., Rüssela, C.: Magnetite nanoparticles prepared by the glass crystallization method and their physical properties, J. Magn. Magn. Mater., 298, 7 – 13, (2006).
9 Abdel-Hameed, S.A.M., Hessien, M.M., Azooz, M.A.: Preparation and characterization of some ferromagnetic glass-ceramics contains high quantity of magnetite, Ceram. Int., 35, 1539 – 1544, (2009).
10 Sohn, S.B., Choi, S.Y., Shim, I.B.: Preparation of Ba-ferrite containing glass-ceramics in BaO-Fe2O3-SiO2, J. Magn. Magn. Mater., 239, 533 – 536, (2002).
11 Müller, R., Ulbrich, C., Schüppel, W., Steinmetz, H.: Preparation and properties of barium-ferrite-containing glass-ceramics, J. Eur. Ceram. Soc., 19, 1547 – 1550, (1999).
12 Shirk, B.T., Buessem, W.R.: Temperature dependence of ms and K1 of BaFe12O19 and SrFe12O19 single crystals, Jpn. J. Appl. Phys., 40, 1294 – 1296, (1969).
13 Zaitsev, D.D., Kazin, P.E., Garshev, A.V., Tretyakov, Y.D., Jansen, M.: Synthesis and magnetic properties of SrO-Fe2O3-B2O3 glass-ceramics, Inorg. Mater., 40, 881 – 885, (2004).
14 Mekki, A.: Magnetic properties of Fe ions in a silicate glass and ceramic, physica status solidi, 184, 327 – 333, (2001).
15 Mirkazemi, M., Marghussian, V.K., Beitollahi, A.: Crystallization behaviour, microstructure and magnetic properties of BaO-Fe2O3-B2O3-SiO2 glass-ceramics, Ceram. Int., 32, 43 – 51, (2006).
16 Rathenau, G.W.: Saturation and magnetization of hexagonal iron oxide compound, Rev. Mod. Phys, 25, 297 – 302, (1953).
17 Marghussian, V.K., Beitollahi, A., Haghi, M.: The effect of SiO2 and Cr2O3 additions on the crystallization behavior and magnetic properties of a B2O3-BaO-Fe2O3 glass, Ceram. Int., 29, 455 – 462, (2003).
18 Cullity, B.D.: Elements of X-ray diffraction, 2nd edition, Addison Wesley, 1978.
19 Shirk, B.T., Buessem, W.R.: Magnetic properties of barium ferrite formed by crystallization of glass, J. Am. Ceram. Soc., 53, 192 – 196, (1970).
20 Cullity, B.D., Graham, C.D.: Introduction to magnetic materials, 2nd edition, JohnWilley & Sons, Inc., Hoboken, New Jersey, 2009.
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