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Full-Text Articles in Physics

Superconducting Mgb2 Thin Films By Pulsed Laser Deposition, S. R. Shinde, S. B. Ogale, R. L. Greene, T. Venkatesan, Paul C. Canfield, Sergey L. Bud'ko, G. Lapertot, Cedomir Petrovic Jul 2001

Superconducting Mgb2 Thin Films By Pulsed Laser Deposition, S. R. Shinde, S. B. Ogale, R. L. Greene, T. Venkatesan, Paul C. Canfield, Sergey L. Bud'ko, G. Lapertot, Cedomir Petrovic

Ames Laboratory Publications

Growth of MgB2thin films by pulsed laser deposition is examined under ex situ and in situprocessing conditions. For the ex situ process, boronfilmsgrown by pulsed laser deposition were annealed at 900 °C with excess Mg. For the in situ process, different approaches involving ablation from a stoichiometric target under different growth conditions, as well as multilayer deposition involving interposed Mg layers were examined and analyzed. Magnetic measurements on ex situ processed films show Tc of ∼39 K, while the current best in situfilms show a susceptibility transition at ∼22 K.


Magnetic Force Microscopy Study Of Magnetization Reversal In Sputtered Fesial(N) Films, Chester C.H. Lo, J. E. Snyder, J. S. Leib, R. Chen, B. Kriegermeier-Sutton, Matthew J. Kramer, David C. Jiles, M. T. Kief Mar 2001

Magnetic Force Microscopy Study Of Magnetization Reversal In Sputtered Fesial(N) Films, Chester C.H. Lo, J. E. Snyder, J. S. Leib, R. Chen, B. Kriegermeier-Sutton, Matthew J. Kramer, David C. Jiles, M. T. Kief

Materials Science and Engineering Publications

The magnetization reversal in a series of rf-sputtered FeSiAl(N) films has been studied using magnetic force microscopy. A system has been developed which has the capability to image domain structure while an in-plane magnetic field is applied in situ. All films exhibited a stripe domain structure in zero applied field which was indicative of a perpendicular component of domain magnetization which alternates in sign. All films showed a similar sequence of magnetization processes: on reducing the applied field from saturation a fine stripe domain structure nucleated and then coarsened as the field was decreased to zero. Local switching of ...