No abstract

No abstract

No abstract

Construction of a 40 T hybrid magnet system is in progress at the High Magnetic Field Laboratory, Chinese Academy of Sciences. The present design concept includes an 11 T superconducting magnet with a room temperature bore of 580 mm, a 29 T resistive magnet with a clear bore of 32 mm, and a 26 T resistive magnet with a clear bore of 50 mm. The total maximum field on axis in the 32 mm bore is 40 T, and in the 50 mm bore it is 37 T. The 11 T superconducting magnet will use a cable-in-conduit conductor (CICC). The high field magnet is made from Nb3Sn superconductor, and the low field magnet is made from NbTi superconductor. This paper describes the design concept of the cable-in-conduit conductor and the mechanical analysis of the jacket.

Articles you may be interested inEnhanced magnetoresistance induced by oxygen deficiency in La0.4Ca0.6MnO3-δ oxides Magnetic and charge ordering properties of Bi0.6-x(RE)xCa0.4MnO3 (0.0 ≤ x ≤ 0.6) perovskite manganites J. Appl. Phys. 111, 07E128 (2012); 10.1063/1.3675982Correlation of structural distortion with magnetic properties in electron-doped Ca 0.9 R 0.1 MnO 3 perovskites ( R = rare -earth) Structural, magnetic, and electronic transport properties of Bi 0.6−x La x Ca 0.4 MnO 3 ͑0 Յ x Յ 0.6͒ manganites have been studied systematically. The parent compound exhibits robust charge ordered antiferrromagnetic ͑COAFM͒ phase with T CO ϳ 293 K and AFM Néel temperature T N ϳ 149 K. The sample with x = 0.1 show a M͑T͒ curve of "arch bridge" form between 142 and 253 K, which is attributed to the AFM peak embedded in the broad transition of the CO. For the middle doping samples ͑0.2Յ x Յ 0.4͒, although the CO peaks disappear as a result of the suppression of the long range CO state, AFM superexchange coupling has been strengthened with the increasing of La doping level. The Bi 0.1 La 0.5 Ca 0.4 MnO 3 sample shows interesting phenomena such as magnetization steps and magnetic memory effect. The resistivity of the samples exhibits insulating behavior in our measured temperature range for x Յ 0.4. While both x = 0.5 and x = 0.6 compounds exhibit metalinsulator transition. Furthermore, large low field magnetoresistance ͑MR͒ and hysteresis appears only in the MR͑H͒ curve of x = 0.5 sample. These results are discussed in terms of the charge localization caused by the lattice distortion due to the character of the 6s 2 lone pair of Bi 3+ ions.

No abstract

No abstract

No abstract