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Superconducting properties of MgB2 materials

G. ALECU1,* , N. STANCU1, S. ZAMFIR1, A. COSAC1

Affiliation

  1. INCDIE ICPE-CA – National Institute for Research and Development in Electrical Engineering, 313 Splaiul Unirii, 030138 Bucharest-3, Romania

Abstract

MgB2 becomes superconducting just below 40 K. Superconducting transition with the onset temperature of 39K was confirmed by both magnetic and scanning electronic microscopy measurements. Magnetization versus field (M-H) curve shows the behavior of a typical Type II superconductor. The bulk sample shows good connection between grains. SEM studies of bulk samples of MgB2 revealed details of the grain boundary structure. Also, the powder X-ray diffraction pattern of the MgB2 powder is presented..

Keywords

Superconductivity, Powder of MgB2, Transition temperature, X-ray diffraction pattern.

Submitted at: Jan. 25, 2007
Accepted at: April 15, 2007

Citation

G. ALECU, N. STANCU, S. ZAMFIR, A. COSAC, Superconducting properties of MgB2 materials, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 4, pp. 1187-1189 (2007)