The effect of MWCNT addition on superconducting properties of MgB2 fabricated by high-pressure combustion synthesis


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We successfully prepared superconducting powders of magnesium diboride doped with carbon nanotubes by the method of combustion synthesis under high Ar pressure. Powders of magnesium, boron, and multi-walled carbon nanotubes (MWCNT) were used as starting materials. X-ray diffraction analysis showed the presence of MgB2 and MgO in combustion products. The temperature dependence of magnetization showed a sharp superconducting transition at around 38.5 K. The critical current density can be estimated from the hysteresis of magnetization curve by using the Bean’s formula. MgB2 doped with MWCNT (1%) showed the best value of high critical current density, 1.4 × 108 A/cm2 at 5 K, in zero magnetic fields.

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S. Tolendiuly

Al-Farabi National University

Autor responsável pela correspondência
Email: karen.martirosyan@utrgv.edu
Cazaquistão, 71 Al-Farabi Av., Almaty, 050040

S. Fomenko

Institute of Combustion Problems, Almaty

Email: karen.martirosyan@utrgv.edu
Cazaquistão, 172 Bogenbai Batyr Str., Almaty, 050012

R. Abdulkarimova

Institute of Combustion Problems, Almaty

Email: karen.martirosyan@utrgv.edu
Cazaquistão, 172 Bogenbai Batyr Str., Almaty, 050012

Z. Mansurov

Institute of Combustion Problems, Almaty

Email: karen.martirosyan@utrgv.edu
Cazaquistão, 172 Bogenbai Batyr Str., Almaty, 050012

G. Dannangoda

Department of Physics

Email: karen.martirosyan@utrgv.edu
Estados Unidos da América, Brownsville-Edinburg-Harlingen, TX, 78520

K. Martirosyan

Department of Physics

Email: karen.martirosyan@utrgv.edu
Estados Unidos da América, Brownsville-Edinburg-Harlingen, TX, 78520

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