The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Wilde, S. AU - Chesca, B. AU - Hannah, A.N. AU - Malyshev, O.B. AU - Pattalwar, N. AU - Pattalwar, S.M. AU - Sian, B.S. AU - Stenning, G.B.G. AU - Valizadeh, R. ED - Schaa, Volker RW ED - He, Yuan ED - Li, Lu ED - Zhao, Ning TI - DC Magnetism of Niobium Thin Films J2 - Proc. of SRF2017, Lanzhou, China, July 17-21, 2017 C1 - Lanzhou, China T2 - International Conference on RF Superconductivity T3 - 18 LA - english AB - Niobium thin films were deposited onto a-plane sapphire with varying kinetic energy and varying substrate temperature. There were no consistent trends which related the particle energy or substrate temperature to RRR. The sample which displayed the largest RRR of 229 was then compared to both a thin film deposited with similar conditions onto copper substrate and to bulk niobium. DC magnetometry measurements suggest that the mechanism of flux entry into thin film niobium and bulk niobium may vary due to differences in the volumes of both defects and impurities located within the grains. Results also suggest that magnetic flux may penetrate thin films at small fields due to the sample geometry. PB - JACoW CP - Geneva, Switzerland SP - 640 EP - 643 KW - ion KW - site KW - niobium KW - cavity KW - power-supply DA - 2018/01 PY - 2018 SN - 978-3-95450-191-5 DO - 10.18429/JACoW-SRF2017-TUPB103 UR - http://jacow.org/srf2017/papers/tupb103.pdf ER -