Abstract
The work aimed at preparation of the MgB2 doped with alloying metals (Al, Cu, Ag, Zn) by SHS in a mode of thermal explosion. The measured combustion temperatures fell within the range 940–1030°С. Detailed XRD analysis has shown that, among other selected metals, it is solely Al that can enter the MgB2 lattice. According to time-resolved XRD results, the formation of final product (Mg, Al)B2 in the Mg–Al–B system involved no intermediate phases. But in the Mg–Cu–B system, the volume reaction additionally yielded MgB4, Cu2Mg, and CuMg2 due to the presence of the liquid phase. In final products, the agglomerates of MgB2 grains had a size of 500–1000 nm, while the size of Cu2Mg and CuMg2 inclusions was within 0.5–2 μm.
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References
Buzea, C. and Yamashita, T., Review of the superconducting properties of MgB2, Supercond. Sci. Technol., 2001, vol. 14, pp. R115–R146. doi 10.1088/0953-2048/14/11/201
Canfield, P.C. and Bud’ko, S.L., Magnesium diboride: One year on, Phys. World, 2002, vol. 15, no. 1, pp. 29–34. https://doi.org/10.1088/2058-7058/15/1/36
Ivanovskii, A.L., Medvedeva, N.I., Zubkov, V.G., and Bamburov, V.G., Synthesis, physicochemical properties, and materials science aspects of superconducting MgB2 and related phases, Russ. J. Inorg. Chem., 2002, vol. 47, no. 4, pp. 584–597.
Zhai, H.Y., Christen, H.M., White, C.W., Budai, J.D., Lowndes, D.H., and Meldram, A., Buried superconducting layers comprised of magnesium diboride nanocrystals formed by ion implantation, Appl. Phys. Lett., 2002, vol. 80, no. 25, pp. 4786–4788. http://dx.doi.org/10.1063/1.1488695
Gümbel, A., Eckert, J., Fuchs, G., Nenkov, K., Müller, K.-H., and Schultz, L., Improved superconducting properties in nanocrystalline bulk MgB2, Appl. Phys. Lett., 2002, vol. 80, no. 15, pp. 2725–2427. http://dx.doi.org/10.1063/1.1469654
Ivanovskii, A.L., Superconducting MgB2 and related compounds: Synthesis, properties, and electronic structure, Russ. Chem. Rev., 2001, vol. 70, no. 9, pp. 717–734. https://doi.org/10.1070/RC2001v070n09ABEH000675.
Ma, J., Sun, A., Wei, G., Zheng, L., Yang G., and Zhang, X., Al-doping effects on the structural change of MgB2, J. Supercond. Novel Magn., 2010, vol. 23, pp. 187–191. doi 10.1007/s10948-009-0513-6
Karpinski, J., Zhigadlo, N.D., Schuck, G., Kazakov, S.M., Batlogg, B., Rogacki, K., Puzniak, R., Jun, J., Müller, E., Wägli, P., Gonnelli, R., Daghero, D., Ummarino, G.A., and Stepanov, V.A., Al substitution in MgB2 crystals: Influence on superconducting and structural properties, Phys. Rev. B, 2005, vol. 71, no. 17, pp. 174506–174520. doi 10.1103/PhysRevB.71.174506
Kazakov, S.M., Angst, M., Karpinski, J., Fita, I.M., and Puzniak, R., Substitution effect of Zn and Cu in MgB2 on Tc and structure, Solid State Commun., 2001, vol. 119, no. 1, pp. 1–5. doi 10.1016/S0038-1098(01)00207-1
Tampieri, A., Celotti, G., Sprio, S., Rinaldi, D., Barucca, G., and Caciuffo, R., Effects of copper doping in MgB2 superconductor, Solid State Commun., 2002, vol. 121, nos. 9–10, pp. 497–500. http://doi.org/10.1016/S0038-1098(01)00514-2
Cheng, C.H., Zhao, Y., Wang, L., and Zhang, H., Preparation, structure and superconductivity of Mg1‒xAgxB, Physica C, 2002, vol. 378–381, pp. 244–248. http://doi.org/10.1016/S0921-4534(02)01421-1
Paranthaman, M., Thompson, J.R., and Christen, D.K., Effect of carbon-doping in bulk superconducting MgB2 samples, Physica C, 2001, vol. 355, nos. 1–2, pp. 1–5. http://doi.org/10.1016/S0921-4534(01)00424-5
Prikhna, T.A., Modern superconductive materials for electrical machines and devices working on the principle of levitation, Low Temp. Phys., 2006, vol. 32, no. 4, pp. 505–517. http://dx.doi.org/10.1063/1.2199455
Zlotnikov, I., Gotman, I., and Gutmanas, E.Y., Processing of dense bulk MgB2 superconductor via pressure-assisted thermal explosion mode of SHS, J. Eur. Ceram. Soc., 2005, vol. 25, no. 15, pp. 3517–3522. http://doi.org/10.1016/j.jeurceramsoc.2004.09.009
Przybylski, K., Stobierski, L., Chmist, J., and Kołodziejczyk, A., Synthesis and properties of MgB2 obtained by SHS method, Physica C, 2003, vol. 387, nos. 1–2, pp. 148–152. http://doi.org/10.1016/S0921-4534(03)00661-0
Rosenband, V. and Gany, A., Thermal explosion synthesis of magnesium diboride powder, Combust. Explos. Shock Waves, 2014, vol. 50, no. 6, pp. 653–657. doi 10.1134/S0010508214060057
Kovalev, D.Yu., Potanin, A.Yu., Levashov, E.A., and Shkodich, N.F., Phase formation dynamics upon thermal explosion synthesis of magnesium diboride, Ceram. Int., 2016, vol. 42, no. 2, pp. 2951–2959. http://doi.org/10.1016/j.ceramint.2015.10.078
Ma, Z., Liu, Yo., Shi, Q., Zhao, Q., and Gao, Z., The mechanism of accelerated phase formation of MgB2 by Cu-doping during low-temperature sintering, Mater. Res. Bull., 2009, vol. 44, no. 3, pp. 531–537. http://doi.org/10.1016/j.materresbull.2008.07.011
Feng, W.J., Xia, T.D., Liu, T.Z., Zhao, W.J., and Wei, Z.Q., Synthesis and properties of Mg1–xCuxB2 bulk obtained by self-propagating high-temperature synthesis (SHS) method at low temperature, Physica C, 2005, vol. 425, nos. 3–4, pp. 144–148. http://doi.org/10.1016/j.physc.2005.07.002
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Potanin, A.Y., Kovalev, D.Y., Pogozhev, Y.S. et al. Metal-Doped MgB2 by Thermal Explosion: A TRXRD Study. Int. J Self-Propag. High-Temp. Synth. 27, 18–25 (2018). https://doi.org/10.3103/S1061386218010065
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DOI: https://doi.org/10.3103/S1061386218010065