STRUCTURAL, ELECTRICAL AND THERMAL ANALYSIS OF Y1-xEuxBa2Cu3O7-d SUPERCONDUCTORS.
- Physics and Mathematical Engineering Department, Faculty of Electronic Engineering, Menoufia University, Menouf 23952, Egypt.
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(Y,Eu)-Ba-Cu-O samples were prepared by solid state method of heat treatment for obtaining single phase materials. The relationship between Y-Eu substitution and the superconducting properties of Y1-xEuxBa2CuO7-d (0.0? x ?0.9) solid solution have been studied. DC resistance measurements showed that Eu substitution was affected the normalized resistance and Tc values. X-ray diffraction analysis showed that the main phase in the prepared (Y-Eu)–Ba-Cu-O samples was the orthorhombic phase. The samples were tended to form plate type of single crystals with preferential orientation in c-direction. The crystallite size of the prepared samples was calculated from X-ray diffraction patterns using Scherer\'s equation and has a value of 21nm for pure YBCO and that of Eu content up to 0.9 samples. Thermal analysis of (Y,Eu)-Ba-Cu-O system were performed by means of TG and DTA. The oxygen content was estimated from TG-analysis and it was found to decrease with increasing Eu-content. DTA showed three-regions which were classified as follows: (1) Exothermic peak as a result of chemically bonded dehydration temperature. (2) Endothermic peak due to tetragonal orthorhombic transformation temperature. (3) Exothermic peak which was related to melting temperature.
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[Ahmed Abo Arais. (2017); STRUCTURAL, ELECTRICAL AND THERMAL ANALYSIS OF Y1-xEuxBa2Cu3O7-d SUPERCONDUCTORS. Int. J. of Adv. Res. 5 (Feb). 46-54] (ISSN 2320-5407). www.journalijar.com
Physics and Mathematical Engineering Department, Faculty of Electronic Engineering, Menoufia University, Menouf, Egypt.