caa a22 4500 445827076 CHVBK 20180317145302.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10854-011-0337-6 doi (NATIONALLICENCE)springer-10.1007/s10854-011-0337-6 Investigation of mechanical and superconducting properties of iron diffusion-doped Bi - 2223 superconductors [Elektronische Daten] [O. Ozturk, H. Cetinkara, E. Asikuzun, M. Akdogan, M. Yilmazlar, C. Terzioglu] The mechanical and superconducting properties of the Fe diffusion-doped (Bi-Pb)-2223 superconductor have been investigated. First, iron was evaporated on Bi-2223 superconductor and then the Fe layered superconductor was annealed at 830°C for 10, 30 and 60h. Static Vickers hardness, dc electrical resistivity, X-ray diffraction and scanning electron microcopy have been carried out to assess the effects of Fe doping. These measurements indicates that Fe doping, in comparison with the undoped samples, increased the critical transition temperature, and improved formation of high T c phase, while decreasing the number and size of voids. Moreover, both microhardness and grain size were also enhanced by increasing the amount of diffusion. The values of microhardness were found to be load dependent. In addition, we have investigated the indentation size effect (ISE) behavior using some models such as the Kick's law, modified proportional specimen resistance (MPRS) model and the Hays- Kendall (HK) approach. Among them, both HK and MPRS models are successful. In this study, the possible reasons of noticed improvement on mechanical and physical properties due to iron diffusion are discussed. Springer Science+Business Media, LLC, 2011 Ozturk O. Department of Physics, Faculty of Arts and Science, Kastamonu University, 37100, Kastamonu, Turkey aut Cetinkara H. Department of Physics, Faculty of Arts and Science, Mustafa Kemal University, 31034, Hatay, Turkey aut Asikuzun E. Department of Physics, Faculty of Arts and Science, Kastamonu University, 37100, Kastamonu, Turkey aut Akdogan M. Department of Physics, Faculty of Arts and Science, Abant Izzet Baysal University, 14280, Bolu, Turkey aut Yilmazlar M. Faculty of Education, Sakarya University, 54300, Hendek, Sakarya, Turkey aut Terzioglu C. Department of Physics, Faculty of Arts and Science, Abant Izzet Baysal University, 14280, Bolu, Turkey aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/9(2011-09-01), 1501-1508 0957-4522 22:9<1501 2011 22 10854 https://doi.org/10.1007/s10854-011-0337-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-011-0337-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ozturk O. Department of Physics, Faculty of Arts and Science, Kastamonu University, 37100, Kastamonu, Turkey aut NATIONALLICENCE 700 1- Cetinkara H. Department of Physics, Faculty of Arts and Science, Mustafa Kemal University, 31034, Hatay, Turkey aut NATIONALLICENCE 700 1- Asikuzun E. Department of Physics, Faculty of Arts and Science, Kastamonu University, 37100, Kastamonu, Turkey aut NATIONALLICENCE 700 1- Akdogan M. Department of Physics, Faculty of Arts and Science, Abant Izzet Baysal University, 14280, Bolu, Turkey aut NATIONALLICENCE 700 1- Yilmazlar M. Faculty of Education, Sakarya University, 54300, Hendek, Sakarya, Turkey aut NATIONALLICENCE 700 1- Terzioglu C. Department of Physics, Faculty of Arts and Science, Abant Izzet Baysal University, 14280, Bolu, Turkey aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/9(2011-09-01), 1501-1508 0957-4522 22:9<1501 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer