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Full-Text Articles in Physical Sciences and Mathematics
Silicon Oil: A Cheap Liquid Additive For Enhancing In-Field Critical Current Density In Mgb2, Xiaolin Wang, Zhenxiang Cheng, S X. Dou
Silicon Oil: A Cheap Liquid Additive For Enhancing In-Field Critical Current Density In Mgb2, Xiaolin Wang, Zhenxiang Cheng, S X. Dou
Australian Institute for Innovative Materials - Papers
In this work, the authors report on significant flux pinning enhancement in MgB2 that has been easily obtained using a liquid additive, silicon oil. MgB2 bulk samples with 0 up to 30 wt % silicon oil added were prepared by an in situ reaction. Results showed that the Si and C released from the decomposition of the silicon oil formed Mg2Si and substituted into B sites, respectively. Increasing the amount of the Si oil up to 15 wt % has resulted in the reduction of the lattice parameters, as well as Tc and R(300 K)/R(T …
Mgb2 For Application To Rf Cavities For Accelerators, Tsuyoshi Tajima, Alberto Canabal, Yue Zhao, Alexander Romanenko, Brian H. Moeckly, Christopher D. Nantista, Sami Tantawi, Larry Phillips, Yoshihisa Iwashita, Isidoro E. Campisi
Mgb2 For Application To Rf Cavities For Accelerators, Tsuyoshi Tajima, Alberto Canabal, Yue Zhao, Alexander Romanenko, Brian H. Moeckly, Christopher D. Nantista, Sami Tantawi, Larry Phillips, Yoshihisa Iwashita, Isidoro E. Campisi
Australian Institute for Innovative Materials - Papers
Magnesium diboride (MgB2) has a transition temperature (Tc) of ~40 K, i.e., about 4 times as high as that of niobium (Nb).We have been evaluating MgB2 as a candidate material for radio-frequency (RF) cavities for future particle accelerators. Studies in the last 3 years have shown that it could have about one order of magnitude less RF surface resistance (Rs) than Nb at 4 K. A power dependence test using a 6 GHz TE011 mode cavity has shown little power dependence up to ~12 mT (120 Oe), limited by available power, compared …
Kinetic Roughening Of Magnetic Flux Penetration In Mgb2 Thin Films, Andrea Lucarelli, Stephanie Hummert, Andrea Chaney, Gunter Lupke, Brian Moeckly, Yue Zhao, S X. Dou
Kinetic Roughening Of Magnetic Flux Penetration In Mgb2 Thin Films, Andrea Lucarelli, Stephanie Hummert, Andrea Chaney, Gunter Lupke, Brian Moeckly, Yue Zhao, S X. Dou
Australian Institute for Innovative Materials - Papers
Time-resolved magneto-optical studies are performed on MgB2 thin film samples grown by in situ pulsed laser deposition and in situ reactive deposition technique. The latter reveal dendritic avalanche-free flux penetration. The kinetic roughening of magnetic flux penetration is studied for applied ac current. Dynamic scaling laws determined for both static field and ac current are consistent with the directed percolation depinning model, placing the vortex dynamics in MgB2 in the same universality class as YBCO and Nb.