We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Synthesis and Superconductivity of Ba<sub>2</sub>Ti<sub>2</sub>(Fe<sub>1−x</sub>Cr<sub>x</sub>)<sub>2</sub>As<sub>4</sub>O.
- Authors
Hsieh, C. C.; Ke, C.; Cheng, C. H.; Zhang, H.; Zhao, Y.
- Abstract
Ba2Ti2(Fe1−xCrx)2As4O (0 ≤ x ≤ 8%) compounds are synthesized by solid-state reaction and their structure and superconductivity are studied with x-ray diffraction, electric resistivity, and magnetization measurements. It is observed that the Cr dopants in the Fe site of Ba2Ti2Fe2As4O expand the lattice constants, but do not cause any structure phase transition. Superconducting transition temperature Tc of the Ba2Ti2(Fe1−xCrx)2As4O is found monotonically depressed with Cr doping level at an average depression rate of ΔTc/Cr − 1% = − 2.6 K. Meanwhile, the superconducting volume fraction is also significantly reduced, and the low-temperature resistivity is enhanced. It is believed that the Cr dopants work as pair-breaking impurities, which take responsibility for the depression of superconductivity in the system.
- Subjects
SUPERCONDUCTIVITY; ELECTRICAL resistivity; X-ray diffraction; MAGNETIZATION; CHROMIUM
- Publication
Journal of Superconductivity & Novel Magnetism, 2018, Vol 31, Issue 6, p1701
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-017-4392-y