Effect of Substitution and Heat Treatment Route on Polycrystalline FeSe0.5Te0.5 Superconductors
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, cilt.26, sa.7, ss.2369-2374, 2013 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 26 Sayı: 7
- Basım Tarihi: 2013
- Doi Numarası: 10.1007/s10948-012-1820-x
- Dergi Adı: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.2369-2374
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Karadeniz Teknik Üniversitesi Adresli: Evet
Özet
The effect of atomic substitution of Te in iron based superconductors FeSe (1: 1 type), which exhibits the simplest crystal structure among the iron-based superconductors, has been investigated in terms of structural, electronic transport, and magnetic properties. Polycrystalline samples with nominal Se: Te in FeSe1-xTex samples for x = 0.5(350)degrees C, 0.5(700)degrees C, 0.6(700)degrees C, and 0.75(700)degrees C were synthesized by the solid-state reaction method. In overall samples, it has been observed that the most superconducting properties seen in x = 0.6(700)degrees C samples, for 0.5(350)degrees C and 0.5(700)degrees C samples latter showed better superconducting properties as dc magnetic susceptibility, ac susceptibility, and resistivity measurements and sample homogeneity. T-c enhancement is well correlated with the Te substitution up to 75 %.