TY - GEN
T1 - Structure and properties of magnesium diboride and the effect of additions
AU - Prikhna, Tatiana
AU - Eisterer, Michael
AU - Mamalis, Athanasios G.
AU - Kozyrev, Artem
AU - Romaka, Vitaliy
AU - Sokolovsky, Vladimir
AU - Karpets, Myroslav
AU - Moshchil, Viktor
AU - Sverdun, Vladimir
AU - Ponomaryov, Semyon
AU - Serbenyuk, Tetiana
N1 - Publisher Copyright:
© 2018 Trans Tech Publications, Switzerland.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Our investigations show that the addition of Ti, polyvalent titanium oxides or TiC powders (0.1-40 µm, amount: 10 wt%) can affect the formation of MgBx (x≥4) inclusions and a redistribution of admixed oxygen resulting in the appearance of dispersed inclusions with near MgBO stoichiometry in the MgB2 matrix and thus influencing the critical current density and the critical magnetic fields of the materials. The highest Bc2 and Birr were obtained when powdered polyvalent titanium oxides (synthesized by electroerosion dispersion) or powdered titanium were added, but the critical magnetic fields were somewhat lower in the case of Ti additions. We show that Mg diffuses during the synthesis inside the grains of polyvalent titanium oxide, titanium carbide or titanium, which can affect the redistribution of boron and oxygen in the superconducting matrices and thus influence pinning and the superconducting properties.
AB - Our investigations show that the addition of Ti, polyvalent titanium oxides or TiC powders (0.1-40 µm, amount: 10 wt%) can affect the formation of MgBx (x≥4) inclusions and a redistribution of admixed oxygen resulting in the appearance of dispersed inclusions with near MgBO stoichiometry in the MgB2 matrix and thus influencing the critical current density and the critical magnetic fields of the materials. The highest Bc2 and Birr were obtained when powdered polyvalent titanium oxides (synthesized by electroerosion dispersion) or powdered titanium were added, but the critical magnetic fields were somewhat lower in the case of Ti additions. We show that Mg diffuses during the synthesis inside the grains of polyvalent titanium oxide, titanium carbide or titanium, which can affect the redistribution of boron and oxygen in the superconducting matrices and thus influence pinning and the superconducting properties.
KW - Additions of Ti
KW - Critical current density
KW - Magnesium diboride
KW - TiC and polyvalent titanium oxides
KW - Transition temperature
KW - Upper critical field
UR - http://www.scopus.com/inward/record.url?scp=85043511287&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.915.65
DO - 10.4028/www.scientific.net/MSF.915.65
M3 - Conference contribution
AN - SCOPUS:85043511287
SN - 9783035712216
T3 - Materials Science Forum
SP - 65
EP - 70
BT - Applied Electromagnetic Engineering for Advanced Materials from Macro-to Nanoscale under Static-to Shock Loading
A2 - Mamalis, A.G.
A2 - Enokizono, M.
A2 - Kladas, A.
A2 - Sawada, T.
A2 - Demir, M.M.
PB - Trans Tech Publications Ltd
T2 - 10th Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting, Multifunctional and Nano Materials, JAPMED’10 2017
Y2 - 4 July 2017 through 8 July 2017
ER -