Published in , 2020
tri-layer Superconductor/dielectric/superconductor structures of high-Tc superconductor YBCO and low-loss high-performance microwave dielectrics BZT and BCT were fabricarted by introducing a SrTiO3 barrier layer between the YBCO and dielectric layers.
Recommended citation: (In Review) Integrated High-Temperature YBa 2 Cu 3 O7-δ Superconductor-High-Performance Microwave Dielectric Thin Film Structures. C. Kopas, J. Park, P. Balaji, K. Zhang, S. Gajare, N. Newman </p> </article> </div>
Published in Nanoscale Advances, 2020
This paper documents a soft-sputtering technique for deposition of 2-D MoTe2 films.
Recommended citation: Low-temperature synthesis of 2D anisotropic MoTe2 using a high-pressure soft sputtering technique. Kentaro Yumigeta+, Cameron Kopas+, Mark Blei, Debarati Hajra, Yuxia Shen, Dipesh Trivedi, Pranvera Kolari, Nathan Newman, Sefaattin Tongay. Nanoscale Advances (2020) DOI: 10.1039/D0NA00066C https://pubs.rsc.org/en/content/articlehtml/2020/na/d0na00066c
Published in Thin Solid Films, 2019
This paper documents a new sequential co-evaporation method for fabrication of FeS2 (iron pyrite) thin films, and the substrate temperature dependence on the film properties.
Recommended citation: The influence of substrate temperature on the properties of pyrite thin films deposited using a sequential coevaporation technique. A. Walimbe, A. Wertheim, A. Ravi, C. Kopas, et. al. Thin Solid Films 669, pp 49-5 (2019). DOI: 10.1016/j.tsf.2018.10.022 https://www.sciencedirect.com/science/article/pii/S0040609018306916
Published in Journal of Magnetism and Magnetic Materials, 2018
This paper is about the magnetic properties of Cr-doped NiFe (permalloy) films.
Recommended citation: Magnetic properties of chromium-doped Ni80Fe20 thin films. Alex Devonport, Alena Vishina, RK Singh, Matthew Edwards, Kaiwen Zheng, John Domenico, ND Rizzo, Cameron Kopas, Mark van Schilfgaarde, Nathan Newman. Journal of Magnetism and Magnetic Materials 460 pp. 193-202 (2018). DOI: 10.1016/j.jmmm.2018.03.054 https://www.sciencedirect.com/science/article/pii/S0304885317335382
Published in Applied Physics Letters, 2016
We developed an in-situ technique to measure paramagnetic loss in dielectric resonator structures.
Recommended citation: In-situ electron paramagnetic resonance studies of paramagnetic point defects in superconducting microwave resonators. S Zhang, C Kopas, B Wagner, D Queen, N Newman. Applied Physics Letters 109 (12), 122602 (2016). DOI: 10.1063/1.4962953 https://aip.scitation.org/doi/abs/10.1063/1.4962953
Published in Journal of Crystal Growth, 2014
This paper establishes growth conditions for high-quality Ba(Co,Zn)1/3Nb2/3O3 thin films using pulsed laser deposition (PLD).
Recommended citation: Growth and characterization of epitaxial Ba(Co, Zn)1/3 Nb2/3O3 thin films. Y Li, C Kopas, M Huang, K Bunish, N Newman. Journal of Crystal Growth 387, 81-85 (2014) DOI: 10.1016/j.jcrysgro.2013.10.047 https://www.sciencedirect.com/science/article/pii/S002202481300729X
Published in IEEE Transactions on Applied Superconductivity, 2013
This paper measures the effects of helium-ion irradation on Nb/Al-AlOx/Nb Josephson Junctions.
Recommended citation: Effect of Helium Ion Irradiation on the Tunneling Behavior in Niobium/Aluminum–Aluminum Oxide/Niobium Josephson Junctions. Tiantian Zhang, Cameron Kopas, Lei Yu, Ray W Carpenter, Makram A Qader, Mengchu Huang, Rakesh K Singh, John Mardinly, Robin Cantor, John M Rowell, Nathan Newman IEEE Transactions on Applied Superconductivity 23 (4), 1101610-1101610 (2014) DOI: 10.1109/TASC.2013.2256358. https://ieeexplore.ieee.org/document/6522170
Published in Thin Solid Films, 2012
This paper establishes growth conditions for high-quality Ba(Cd1/3Ta2/3)O3 thin films using pulsed laser deposition (PLD).
Recommended citation: Growth and characterization of Ba(Cd1/3Ta2/3)O3 thin films. LT Liu, C Kopas, RK Singh, RM Hanley, N Newman. Thin Solid Films 520 (19), (2012) DOI: 10.1016/j.tsf.2012.06.034 https://www.sciencedirect.com/science/article/pii/S0040609012007432
Published in Journal of Crystal Growth, 2012
Recommended citation: Experimental study of the kinetically-limited decomposition of ZnGeAs2 and its role in determining optimal conditions for thin film growth. M Vahidi, ZZ Tang, J Tucker, TJ Peshek, L Zhang, C Kopas, RK Singh, M Van Schilfgaarde, N Newman. Journal of Crystal Growth 338 (1), 267-271 (2012) DOI: 10.1016/j.jcrysgro.2011.11.004 https://www.sciencedirect.com/science/article/pii/S0022024811009171