2011年
Superconducting behaviours in reduction-treated mixtures of fine Pr124 and Pr123 ceramics
Journal of Physics: Conference Series
- ,
- ,
- ,
- ,
- ,
- 巻
- 320
- 号
- 開始ページ
- 012077-1
- 終了ページ
- 012077-6
- 記述言語
- 英語
- 掲載種別
- 研究論文(国際会議プロシーディングス)
- DOI
- 10.1088/1742-6596/320/1/012077
- 出版者・発行元
- IOP PUBLISHING LTD
Superconducting behaviours in reduction-treated mixtures of fine Pr124 and Pr123 ceramics synthesized using citrate pyrolysis precursor method are examined by electrical resistivity and magnetic measurements. With increasing the ratio of Pr123, the temperature dependence of rho(T) changes to be semiconductor-like behaviour hugely, and there exist no broad maximum for as-sintered Pr124/Pr123 (1:1.5) and (1:2) samples contrary with the case of (1:1). By reduction treatment, the rho(T) curve shows the maximum according to the increase of carrier concentration in the CuO double chain in Pr 124 grains. By subtracting the Pr3+ paramagnetic contribution from the temperature dependence of magnetization, the remnant magnetization shows weak diamagnetism below. similar to 17 K, indicating small Meissner effect. The diamagnetic susceptibility is independent of magnetic field in the measured field range below 20 Oe.
- リンク情報
- ID情報
-
- DOI : 10.1088/1742-6596/320/1/012077
- ISSN : 1742-6588
- Web of Science ID : WOS:000299350600077