The cooling rate effect on structure and flux pinning force of FeTeSe single crystal deposited by self-flux method


Farisoğulları D., GULER N. K. , Yakinci K., EKİCİBİL A. , KARADAĞ F. , Yakinci M. E. , ...Daha Fazla

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, cilt.29, ss.6477-6483, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 29 Konu: 8
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s10854-018-8629-8
  • Dergi Adı: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
  • Sayfa Sayıları: ss.6477-6483

Özet

Synthesis and characterization of FeTe0.5Se0.5 single crystals prepared by self-flux technique with two different cooling rates of 1.45 and 5.83 a"integral/h have been investigated. The XRD results show that the samples have tetragonal structure. The SEM results indicate that the samples demonstrate a terrace-like formation. The superconducting transition temperatures of two samples obtained as magnetization measurement are seen to be 14.62 and 14.38 K for sample A (5.83 a"integral/h) and sample B (1.45 a"integral/h), respectively. The M-H curves reveal the existence of ferromagnetism in all measured temperatures. The normalized pinning force f(F-p/F-pmax) at h(H/H (irr) ) curves are scaled using the Dew-Hughes model given by f(h) = Ah (p) (1 - h) (q) with A = 2.73, p = 0.81 and q = 0.69, the ratio [p/p + q] ae 0.54 for cooling rate of 5.83 a"integral/h sample.