Table of Contents
International Journal of Superconductivity
Volume 2013, Article ID 469280, 6 pages
http://dx.doi.org/10.1155/2013/469280
Research Article

Synthesis and Characterization of RuSr2R1.6Ce0.4Cu2O10 (R = Gd, Eu, and Sm) Magnetosuperconductors

1Department of Mechatronics Engineering, Jeju National University, Jeju 690-756, Republic of Korea
2Department of Physics, Barkatullah University, Bhopaladhya, Madhya Pradesh 462026, India

Received 4 June 2013; Revised 4 July 2013; Accepted 8 July 2013

Academic Editor: Zigang Deng

Copyright © 2013 Rajneesh Mohan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The discovery of the coexistence of superconductivity and weak ferromagnetism in ruthenocuprates like (Ru, R-1222; R = Eu, Gd) and RuSr2GdCu2O8 (Ru-1212) has created a tremendous interest both experimentally as well as theoretically. Here, we have prepared polycrystalline samples of RuSr2R1.4Ce0.6Cu2O10 (R = Gd, Eu, and Sm) by the standard solid state reaction method. These samples were characterized by XRD, SEM, dc resistivity, and squid measurements. All the prepared samples were single phase without any trace of impurity. From the low-temperature resistivity measurement, the samples of (R = Eu and Gd) were found to be superconducting, while the samples of RuSr2Sm1.6Ce0.4Cu2O10 show semiconducting behavior. The magnetization (M) versus field (H) hysteresis at 5 K clearly shows the ferromagnetic behavior of the samples. The zero field cooled magnetization ( ) and field cooled magnetization ( ) diverge at 100 K.