Synthesis and characterization of MgB2 superconductor

Aswal, D. K. ; Sen, Shashwati ; Singh, Ajay ; Rao, T. V. Chandrasekhar ; Vyas, J. C. ; Gupta, L. C. ; Gupta, S. K. ; Sahni, V. C. (2001) Synthesis and characterization of MgB2 superconductor Physica C: Superconductivity, 363 (3). pp. 149-154. ISSN 0921-4534

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Starting with Mg in two different forms, namely, powder and flakes, and B as powder, MgB2 superconductor has been synthesized using solid-state sintering method under atmospheric pressure of argon. The grain growth of MgB2 was greatly enhanced when magnesium flakes were employed. MgB2 grains having a size of up to 3×2×1 mm3 could be retrieved from the samples synthesized using magnesium flakes. The synthesized samples have been characterized by optical microscopy, X-ray diffraction and temperature dependence of resistivity and magnetization measurements. The critical current density of the MgB2 sample synthesized using magnesium flakes was determined to be 3.9×105 A/cm2 (5 K, 1 T), which is comparable to that reported for samples synthesized under high pressures.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:MgB; Synthesis; Magnetization; Optical Microscopy
ID Code:11303
Deposited On:09 Nov 2010 03:36
Last Modified:02 Jun 2011 04:51

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