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TY - CONF AU - Vostrikov, A. AU - Checchin, M. AU - Grassellino, A. AU - Kim, Y.K. AU - Romanenko, A. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Modifications of Superconducting Properties of Niobium Caused by Nitrogen Doping Recipes for High Q Cavities J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - Discovery at Fermilab of a drastic effect of nitrogen doping leading to unprecedented high Q values in niobium cavities * motivated a strong interest in revealing the physics underlying the effect. In this contribution we present new results obtained by DC magnetometry, AC susceptibility, resistivity and thermal properties measurements on nitrogen doped samples prepared by different recipes/doping levels, which shed light on the possible origin of the effect. PB - JACoW CP - Geneva, Switzerland SP - 3312 EP - 3314 KW - niobium KW - SRF KW - cavity KW - superconductivity KW - vacuum DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPTY022 UR - http://jacow.org/ipac2015/papers/wepty022.pdf ER -