Physical Properties of the Superconducting System YBCO Containing Different Rare Earth Elements such as Eu, Er and Nd
Shams, M., El-Shokrofy, K., Dawoud, M., Farag, E. (2008). Physical Properties of the Superconducting System YBCO Containing Different Rare Earth Elements such as Eu, Er and Nd. EKB Journal Management System, 18(1), 73-84. doi: 10.21608/mjeer.2008.65221
M.S. Shams; K.M. El-Shokrofy; M.A.T. Dawoud; E.M. Farag. "Physical Properties of the Superconducting System YBCO Containing Different Rare Earth Elements such as Eu, Er and Nd". EKB Journal Management System, 18, 1, 2008, 73-84. doi: 10.21608/mjeer.2008.65221
Shams, M., El-Shokrofy, K., Dawoud, M., Farag, E. (2008). 'Physical Properties of the Superconducting System YBCO Containing Different Rare Earth Elements such as Eu, Er and Nd', EKB Journal Management System, 18(1), pp. 73-84. doi: 10.21608/mjeer.2008.65221
Shams, M., El-Shokrofy, K., Dawoud, M., Farag, E. Physical Properties of the Superconducting System YBCO Containing Different Rare Earth Elements such as Eu, Er and Nd. EKB Journal Management System, 2008; 18(1): 73-84. doi: 10.21608/mjeer.2008.65221

Physical Properties of the Superconducting System YBCO Containing Different Rare Earth Elements such as Eu, Er and Nd

Menoufia Journal of Electronic Engineering Research
Article 6, Volume 18, Issue 1, January 2008, Page 73-84  XML
Document Type: Original Article
DOI: 10.21608/mjeer.2008.65221
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Authors
M.S. Shams1; K.M. El-Shokrofy2; M.A.T. Dawoud3; E.M. Farag2
1Dept. of Physics and Mathematical Engineering, Faculty of Electronic Engineering, Menoufya University, EGYPT
2Physics and Mathematical Engineering Department, Faculty of Engineering, Menoufia University, Shebin El-Kom, Egypt
3Dept. of Physics and Mathematical Engineering, Faculty of Electronic Engineering, Menoufya University, EGYPT.
Abstract
Powder samples of the high temperature superconducting system YBCO have been synthesized with partial replacement of the Yttrium site by rare earth element according to the formula Y1-x REx Ba2 Cu3 O7-δ (RE= Eu, Er and Nd) where x= 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and1.0 mole%. The samples were checked by X-ray diffraction. X-ray analysis' show that the dominant phase is the orthorhombic phase for most samples. Also the samples were checked by Infra-red spectroscopy for determining different modes. Differential thermal analysis used to determine the melting points of the samples. The temperature dependence of electrical resistivity for all samples has been recorded and discussed. Adding rare earth elements such as Eu, Er and Nd improve the superconducting behavior, particularly at certain percentages, depending on the replacing element. Therefore we can conclude that careful replacement of the Yttrium site in the YBCO system with some rare earth elements may improve the superconducting behavior.
Keywords
superconductors; YBCO; Er; Eu; ND; X-ray; Infrared; electrical resistivity; DTA
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