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Structure and Magnetic Properties of Eu2-xCexCu1-yNiyO4+α-δ

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Abstract:

Electron-doped superconducting cuprates of Eu2-xCexCu1-yNiyO4+a-d in under-doped region with x = 0.12 and y = 0, 0.01, 0.02, 0.03 and 0.05 have been prepared, characterized and investigated in order to study the effect of Ni impurity to the magnetic properties of electron doped superconducting cuprates. All main peaks of tetragonal and T’ structure configuration of ECCO were observed in all samples. Temperature dependence of dc magnetic-susceptibility on field cooling at 5 Oe for Eu1.88Ce0.12Cu1-yNiyO4+a-d with d values from 0.0496 to 0.08322 shows diamagnetic behavior for sample with y = 0, starting from about 11 K. For sample with y = 0.01, Tc onset decreases to be around 4 K. The superconductivity disappeared at y ≥ 0.02 indicating 2 % Ni substitution to the Cu has weakened the spin-spin correlation and reduced the value of magnetization in ECCO system.

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Periodical:

Key Engineering Materials (Volume 855)

Pages:

123-127

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.855.123

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Online since:

July 2020

Authors:

Risdiana Risdiana*, Muhammad Abdan Syakuur, Yati Maryati, Maykel Manawan, Togar Saragi

Keywords:

DC-Magnetic Susceptibility, Electron-Doped Superconductor, Ni Impurities, Under-Doped Region

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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