Vortex pinning and magnetic peak effect in Eu(Eu,Ba)2.125Cu3Ox
Küçük Resim Yok
Tarih
2014
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Eu-Ba-Cu-O composition was synthesized by solid state reaction technique. To determine optimum growth temperature, heat treatment was examined on the material at 880-1,100 A degrees C. Microstructural evolution, phase formation and elemental distribution depending on heat treatments were examined by using X-ray diffraction, scanning electron microscope, energy dispersive X-ray spectroscope analysis. Optimum fabrication conditions were determined as 1,020 A degrees C for 24 h under oxygen atmosphere and detailed characterization of corresponding compound was performed. The magnetization hysteresis loops are expounded to be the product of superconducting Eu-123 grains and magnetic Eu2+ ions. The peak effect on the magnetization curves was described by the extended critical state model. Scaling of the pinning force was found such that the peak position is proportional to the irreversibility field H (irr) and the maximum pinning force is proportional to H (irr) (2) .
Açıklama
Anahtar Kelimeler
Superconductors, Field, Nanocrystalline, Temperature, Loop
Kaynak
Journal of Materials Science-Materials in Electronics
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
25
Sayı
3
