scholarly journals Study on the formation of MgB2 phase

2004 ◽  
Vol 411 (1-2) ◽  
pp. 41-46 ◽  
Author(s):  
Qing-rong Feng ◽  
Chinping Chen ◽  
Jun Xu ◽  
Ling-wen Kong ◽  
Xin Chen ◽  
...  
Keyword(s):  
Mgb2 Phase

Excellent Jc in the low-temperature sintered MgB2 superconductors consisted of uncompleted MgB2 phase and residual Mg

2013 ◽  
Vol 141 (1) ◽  
pp. 378-382 ◽  
Author(s):  
Zongqing Ma ◽  
Yongchang Liu ◽  
Qi Cai ◽  
Hua Jiang ◽  
Liming Yu
Keyword(s):  
Low Temperature ◽  
Mgb2 Superconductors ◽  
Mgb2 Phase

The kinetic analysis of formation behavior for the MgB2 phase

2007 ◽  
Vol 443 (1-2) ◽  
pp. 161-165 ◽  
Author(s):  
Shicheng Yan ◽  
Yafeng Lu ◽  
Guoqing Liu ◽  
Guo Yan ◽  
Lian Zhou
Keyword(s):  
Kinetic Analysis ◽  
Formation Behavior ◽  
Mgb2 Phase

Influence of Mg and B Stoichiometry on the Formation Behavior of MgB2 Phase

2007 ◽  
Vol 546-549 ◽  
pp. 2035-2039 ◽  
Author(s):  
S.C. Yan ◽  
G. Yan ◽  
Ya Feng Lu ◽  
Y. Feng ◽  
Lian Zhou
Keyword(s):  
Single Phase ◽  
Solid State Reaction Method ◽  
Stable Phase ◽  
Superconducting Transition ◽  
X Ray Diffraction ◽  
Reaction Method ◽  
X Ray ◽  
Formation Behavior ◽  
Mg Addition ◽  
Mgb2 Phase

Bulk samples with the stoichiometry of Mg:B=1:2 and 1:4 were prepared by solid state reaction method. The microstructure and constituent of the samples were investigated by using the scanning electron microscope (SEM) and the x-ray diffraction (XRD). XRD results showed that the MgB2 phase was first formed in all the samples with different stoichiometry of Mg and B, which indicated that the MgB2 was the most thermodynamically stable phase in the Mg-B binary system. For the samples of Mg:B=1:2, the MgB2 single phase was formed very well when these samples were sintered at 650°C~700°C. For the samples with later added Mg reaching to the stoichiometry of Mg:B=1:2, a longer reaction time or higher reaction temperature was required for the formation of the MgB2 single phase. The SEM results showed that the samples with later added Mg had dense microstructures, suggesting that the later addition of Mg could reduce the porosity of the sample. A small increase of the superconducting transition temperature, Tc, in the Mg addition sample resulted from the dense microstructures.

scholarly journals Influence of the starting composition Mg1−xB2 on the structural and superconducting properties of the MgB2 phase

2001 ◽  
Vol 366 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Y.G. Zhao ◽  
X.P. Zhang ◽  
P.T. Qiao ◽  
H.T. Zhang ◽  
S.L. Jia ◽  
...  
Keyword(s):  
Superconducting Properties ◽  
Mgb2 Phase

Influence of nano-Cu additive on MgB2 phase formation, processing temperature, and transport properties

2011 ◽  
Vol 109 (3) ◽  
pp. 033902 ◽  
Author(s):  
Neson Varghese ◽  
K. Vinod ◽  
S. Rahul ◽  
K. M. Devadas ◽  
Syju Thomas ◽  
...  
Keyword(s):  
Transport Properties ◽  
Phase Formation ◽  
Processing Temperature ◽  
Cu Additive ◽  
Mgb2 Phase

Low temperature formation of superconducting MgB2 phase from elements by mechanical milling

2003 ◽  
Vol 391 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Hiroya Abe ◽  
Makio Naito ◽  
Kiyoshi Nogi ◽  
Motohide Matsuda ◽  
Michihiro Miyake ◽  
...  
Keyword(s):  
Low Temperature ◽  
Mechanical Milling ◽  
Mgb2 Phase

Effect of carbon doping on the formation and stability of MgB2 phase

2008 ◽  
Vol 459 (1-2) ◽  
pp. 452-456 ◽  
Author(s):  
S.C. Yan ◽  
L. Zhou ◽  
G. Yan ◽  
Q.Y. Wang ◽  
Y.F. Lu
Keyword(s):  
Carbon Doping ◽  
Mgb2 Phase
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