Ara
Toplam kayıt 8, listelenen: 1-8
Complete flux jumping in nano-structured MgB2 superconductors prepared by mechanical alloying
(ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2009-07-08)
High density nano-crystalline MgB2 bulk superconductors with induced pinning centres were prepared from elemental precursors by a sequence of ball milling, heat treatment, and final pressing. The XRD results revealed the ...
The Effect of Y2O3 Buffer Layer on the Magnetic Properties of Melt-Processed YBCO Superconductor
(SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2011-07)
In this study, two kinds of melt-processed YBCO samples (Y1050-1 and Y1050-2) grown on a buffer layer of Y(2)O(3) addition were fabricated. The compacted powders were located on a crucible with Y(2)O(3) powder freely poured ...
Effects of Sintering Temperature on Microstructure and Magnetic Properties of Nd–Fe–B Magnets
(SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2013-05)
The sintered Nd-Fe-B (neodymium-iron-boron) magnet has been used for many applications in various fields such as acoustics, communications, and automation due to its excellent properties including high remanence, high ...
Fabrication and properties of dense ex situ magnesium diboride bulk material synthesized using spark plasma sintering
(IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND, 2009-09)
High density ex situ magnesium diboride bulks were synthesized from commercial MgB(2) powder using spark plasma sintering under a range of applied uniaxial pressures between 16 and 80 MPa. The microstructure was characterized ...
Magnetic Characterization of SiC Doped Bulk MgB2 Superconductor
(SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2011-01)
Flux pinning is a very significant mechanism to improve critical current density in MgB2 for many applications, such as developing the performance of wires and tapes. In this study, we have done a systematic study of SiC ...
The Magnetic and Structural Properties of SiC-Doped MgB2 Bulks Prepared by the Standard Ceramic Processing
(SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2011-01)
According to general formula MgB2-x SiC (x) (x=0,0.05,0.1,0.2), MgB2 and SiC-doped bulk superconductors were prepared by the standard ceramic processing. The mixtures of the corresponding powders were sintered at 750 degrees ...
Comparative study of critical current density, pinning force and levitation force behavior in Yb211 doped-Sm123 bulk superconductors
(ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2012-04-15)
The effect of Yb211 doping on the critical transition temperature (T-c), c-lattice parameter, critical current density (J(c)), volume pinning force (F-p) and the vertical levitation force density properties of MPMG-processed ...
Comparison of levitation force relative to thickness of disk shaped YBa2Cu3O7-x prepared by MPMG and FQMG processes
(ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2009-11-20)
The precursor YBCO in the stoichiometric ratio of 1:23 were fabricated using the melt-powder-melt-growth (MPMG) technique, and flame-quench-melt-growth (FQMG) technique. The superconducting regions were determined by ...