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9 results on '"Shi, Z.X."'

2. Enhanced electron correlations in the binary stannide PdSn4: A homologue of the Dirac nodal arc semimetal PtSn4

Author

Xu, C.Q., Zhou, W., Sankar, R., Xing, X.Z., Shi, Z.X., Han, Z.D., Qian, B., Wang, J.H., Zhu, Zengwei, Zhang, J.L., Bangura, A.F., Hussey, N.E., and Xu, Xiaofeng

Subjects
ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Correlated Electron Systems / High Field Magnet Laboratory (HFML)
Abstract

Contains fulltext : 181047.pdf (Author’s version preprint ) (Open Access) 8 p.

Published
2017

9. Magnetic characterization of polycrystalline NdFeAsO0.88F0.12 oxypnictide superconductor

Author

Ding, Y., Sun, Y., Wang, X.D., Shi, Z.X., Ren, Z.A., Yang, J., and Lu, W.

Subjects
*MAGNETIC properties of metals, *NEODYMIUM, *POLYCRYSTALS, *SUPERCONDUCTORS, *MAGNETIZATION, *MAGNETIC susceptibility measurement, *HYSTERESIS loop, *TEMPERATURE effect, *SUPERCONDUCTIVITY
Abstract

Abstract: The superconducting properties of polycrystalline NdFeAsO0.88F0.12 oxypnictide were studied by both DC and AC magnetization measurements. The zero-field cooled (ZFC) magnetic susceptibility, χ(T), measured under the magnetic field of 0.5T shows a dramatic decrease at about 11K. The imaginary component of the first harmonics of the AC magnetic susceptibility, χ″(T), increases with the increasing DC field H dc below 11K. These results indicate the onset of robust intergranular superconductivity at low temperatures. The magnetic hysteresis loops show an anomalous double central peak effect at low temperatures, with one peak at positive fields in decreasing positive external fields. This phenomenon suggests the granular character of this system. The paramagnetism of Nd3+ ions tilts the magnetic hysteresis loops and broadens the hysteresis width ΔM. After correction for the paramagnetism, the temperature and field dependence of the average magnetization critical current density J cm was obtained. The related mechanism was discussed. [ABSTRACT FROM AUTHOR]

Published
2011
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