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28 March 2024
 
  » arxiv » 1211.1221

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Anisotropies and Homogeneities of Superconducting Properties in Iron-Platinum-Arsenide Ca10(Pt3As8)(Fe1.79Pt0.21As2)5
Qing-Ping Ding ; Yuji Tsuchiya ; Yue Sun ; Toshihirotaen ; Yasuyuki Nakajima ; Tsuyoshi Tamegai ;
Date 6 Nov 2012
AbstractWe report a study on the anisotropy of superconducting properties in single crystalline Ca10(Pt4-{delta}As8)(Fe1.79Pt0.21As2)5 with Tc ~13.6 K. Under a field of 5 Oe, the sample reaches fully-diamagnetic state at ~10 K for H//c, and ~8 K for H//ab, indicating the presence of slight inhomogeneities. The magnetization measurements reveal fish-tail effect in the hysteresis loop for both H//c and H//ab. Averaged critical current densities at low magnetic fields along the c-axis and ab-plane Jc(H//c) and Jc(H//ab) at 5 K are estimated to be 0.9*10^5 and 0.7*10^5 A/cm2, respectively. Resistive transitions under magnetic field show broadening, which is consistent with a relatively large anisotropy of upper critical field. Magneto-optical images reveal homogenous current flow within the ab-plane.
Source arXiv, 1211.1221
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