The carrier characteristics of single phase superconducting oxides (Bi, Pb)2Sr2Ca2Cu3Oyunder different heat treatments

Autor:	Qirui Zhang, Xianhui Chen, Jiaju Du, Xiangai Chen, Huaqing Ying, Jianyi Jiang, Shunxi Wang, L.Z. Cao, Yiping Sun, Zhenhui He, Jian Sha
Rok vydání:	1991
Předmět:	Superconductivity Materials science Condensed matter physics Transition temperature Metals and Alloys Analytical chemistry Condensed Matter Physics Weak localization Hall effect Materials Chemistry Ceramics and Composites Electrical and Electronic Engineering Single phase Oxygen content
Zdroj:	Superconductor Science and Technology. 4:S415-S417
ISSN:	1361-6668 0953-2048
DOI:	10.1088/0953-2048/4/1s/124
Popis:	Single phase samples (Bi, Pb)2Sr2Ca2Cu3Oy have been prepared under different heat treatments. The midpoint transition temperature (Tc) is determined by both AC susceptibility and resistance measurement. The resistance-temperature coefficient is found changed from positive to negative when the sample is fast cooled. The Hall coefficient measurement shows that Tc increases monotonically with the effective carrier concentration (nH) and that nH increases with temperature linearly. The authors draw the conclusion that the reduction of the carrier concentration is caused not by the reduction of the oxygen content, but by the weak localization of the carriers which is unfavorable to High Tc.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46f7ca24e2bbc31001fb22f3c5940ae8 https://doi.org/10.1088/0953-2048/4/1s/124 Zobrazit plný text záznamu