Preparation and Properties of MPMG YBCO Bulk with Y2O3 Layer
Yükleniyor...
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer New York LLC
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
n this study, four kinds of melt-processed YBCO samples were fabricated with the MPMG procedure. The compacted powders were located on a crucible with a buffer layer of Y 2 O 3 to avoid liquid to spread on the furnace plate. Their microstructures were defined by XRD analysis and polarized light optical microscopy. The microstructure investigations indicated that the 123 grains were very big and fine and dispersed 211 particles remained in the samples. Resistivities of the samples were measured by a standard continuous dc four-probe method. Magnetization measurements were made and flux jumps were observed at a relatively higher temperature for Y1060. The critical current density, J c , values of the samples, measured by VSM in 5 T magnetic field, exceeded 0.6×10 3 ·cm -2 at 77 K and 4 T.
Açıklama
Anahtar Kelimeler
Crystal growth, Magnetic properties, Microstructure, Superconductors
Kaynak
Journal of Superconductivity and Novel Magnetism
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
24
Sayı
5
