Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions
This project deals with the processing of MgB2 bulk samples and the effect of addition of SiB4. The correlation between fabrication parameters and superconducting properties was studied. MgB2 bulks were prepared by a pellet-inclosed- tube (PICT) and solid-state reaction route methods. MgB2 bulk s...
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2009
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my-upm-ir.119752013-05-27T07:50:32Z Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions 2009-10 Mohd Aris, Mohd Faisal This project deals with the processing of MgB2 bulk samples and the effect of addition of SiB4. The correlation between fabrication parameters and superconducting properties was studied. MgB2 bulks were prepared by a pellet-inclosed- tube (PICT) and solid-state reaction route methods. MgB2 bulk samples were prepared at different annealing temperatures of 650°C, 700°C, 750°C and 800°C. AC susceptibility measurements showed a sharp superconducting transition in all the samples. However, MgB2, samples annealed at 650°C showed slightly low volume susceptibility compared to other samples. The critical current density (Jc) was measured using ac magnetic susceptibility measurement method. The highest critical density in magnetic field, Jc(T,H) from the magnetization measurements was recorded at 3.0×104A/cm2 (5K, 6T) and 7.0×103 A/cm2 (20K, 4T) for the 650°C annealed MgB2. X-ray diffraction (XRD) analysis showed small quantities of MgO and unreacted Mg phases as impurities in the samples. The second part of the work concentrates on Mg non-stoichiometry in MgxB2 (x = 0.8, 1.0 and 1.2) samples. The critical temperature (Tc), was significantly reduced in sample x = 0.8 and x = 1.2 as compared to sample with x=1.0. The Mg0.8B2 sample shows the highest Jc at 5K and 20K, followed by Mg1.2B2 and MgB2 samples, respectively. MgB2 shows the lowest Jc for all temperatures. Superconductors Magnesium diboride High temperature superconductors 2009-10 Thesis http://psasir.upm.edu.my/id/eprint/11975/ http://psasir.upm.edu.my/id/eprint/11975/1/FS_2009_40_A.pdf application/pdf en public masters Universiti Putra Malaysia Superconductors Magnesium diboride High temperature superconductors Faculty Of Science English |
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Universiti Putra Malaysia |
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PSAS Institutional Repository |
| language |
English English |
| topic |
Superconductors Magnesium diboride High temperature superconductors |
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Superconductors Magnesium diboride High temperature superconductors Mohd Aris, Mohd Faisal Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions |
| description |
This project deals with the processing of MgB2 bulk samples and the effect of
addition of SiB4. The correlation between fabrication parameters and
superconducting properties was studied. MgB2 bulks were prepared by a pellet-inclosed-
tube (PICT) and solid-state reaction route methods. MgB2 bulk samples were
prepared at different annealing temperatures of 650°C, 700°C, 750°C and 800°C. AC
susceptibility measurements showed a sharp superconducting transition in all the
samples. However, MgB2, samples annealed at 650°C showed slightly low volume
susceptibility compared to other samples. The critical current density (Jc) was
measured using ac magnetic susceptibility measurement method. The highest critical
density in magnetic field, Jc(T,H) from the magnetization measurements was
recorded at 3.0×104A/cm2 (5K, 6T) and 7.0×103 A/cm2 (20K, 4T) for the 650°C
annealed MgB2. X-ray diffraction (XRD) analysis showed small quantities of MgO
and unreacted Mg phases as impurities in the samples. The second part of the work
concentrates on Mg non-stoichiometry in MgxB2 (x = 0.8, 1.0 and 1.2) samples. The
critical temperature (Tc), was significantly reduced in sample x = 0.8 and x = 1.2 as compared to sample with x=1.0. The Mg0.8B2 sample shows the highest Jc at 5K and
20K, followed by Mg1.2B2 and MgB2 samples, respectively. MgB2 shows the lowest
Jc for all temperatures. |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Mohd Aris, Mohd Faisal |
| author_facet |
Mohd Aris, Mohd Faisal |
| author_sort |
Mohd Aris, Mohd Faisal |
| title |
Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions
|
| title_short |
Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions
|
| title_full |
Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions
|
| title_fullStr |
Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions
|
| title_full_unstemmed |
Synthesis, Morphology And Superconductingproperty Characterization Of Mgxb2 And Mgb2 With Sib4 Additions
|
| title_sort |
synthesis, morphology and superconductingproperty characterization of mgxb2 and mgb2 with sib4 additions |
| granting_institution |
Universiti Putra Malaysia |
| granting_department |
Faculty Of Science |
| publishDate |
2009 |
| url |
http://psasir.upm.edu.my/id/eprint/11975/1/FS_2009_40_A.pdf |
| _version_ |
1747811287347232768 |