A. Berenov

Enhancement of Critical Current Density in low level Al-doped MgB2 (2004)

Berenov, A., Serquis, A., Liao, X. Z., Zhu, Y. T., Peterson, D. E., Bugoslavsky, Y., ...

Two sets of MgB2 samples doped with up to 5 at. % of Al were prepared in different laboratories using different procedures. Decreases in the a and c lattice parameters were observed with Al doping...

Effective Vortex Pinning in MgB2 thin films (2002)

Bugoslavsky, Y., Cowey, L., Tate, T. J., Perkins, G. K., Moore, J., Lockman, Z., ...

We discuss pinning properties of MgB2 thin films grown by pulsed-laser deposition (PLD) and by electron-beam (EB) evaporation. Two mechanisms are identified that contribute most effectively to the...

High Critical Current Density and Improved Irreversibility Field in Bulk MgB2 Made By A Scaleable, Nanoparticle Addition Route (2002)

Wang, J., Bugoslavsky, Y., Berenov, A., Cowey, L., Caplin, A. D., Cohen, L. F., ...

Bulk samples of MgB2 were prepared with 5, 10, and 15% wt.% Y2O3 nanoparticles added using a simple solid-state reaction route. Transmission electron microscopy (TEM) showed a fine nanostructure...

High critical current density and improved irreversibility field in bulk MgB2 made by a scaleable, nanoparticle addition route (2002)

Wang, J., Bugoslavsky, Y., Berenov, A., Cowey, L., Caplin, A.D., Cohen, L.F., ...

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Microwave Power, DC Magnetic Field, Frequency and Temperature Dependence of the Surface Resistance of MgB2 (2001)

Zhukov, A. A., Purnell, A., Miyoshi, Y., Bugoslavsky, Y., Lockman, Z., Berenov, A., ...

The microwave power, dc magnetic field, frequency and temperature dependence of the surface resistance of MgB2 films and powder samples were studied. Sample quality is relatively easy to identify by...

Temperature dependence of the microwave surface impedance measured on different kinds of MgB$_2$ samples (2001)

Zhukov, A. A., Cohen, L. F., Purnell, A., Bugoslavsky, Y., Berenov, A., MacManus-Driscoll, J. L., ...

In this paper we present the results of measurements of the microwave surface impedance of a powder sample and two films of MgB$_2$. One film has $T_c=30$ K and is not textured, the other is...

Growth of Strongly Biaxially Aligned MgB2 Thin Films on Sapphire by Post-annealing of Amorphous Precursors (2001)

Berenov, A., Lockman, Z., Qi, X., Bugoslavsky, Y., Cohen, L. F., Jo, M. -H., ...

MgB2 thin films were cold-grown on sapphire substrates by pulsed laser deposition (PLD), followed by post-annealing in mixed, reducing gas, Mg-rich, Zr gettered, environments. The films had Tcs in...

Microwave Surface Resistance in MgB2 (2001)

Zhukov, A. A., Yates, K., Perkins, G. K, Bugoslavsky, Y., Polichetti, M., Berenov, A., ...

Measurements of the temperature dependence of the surface resistance at 3 GHz of 100 micron size grains of MgB_2 separated powder are presented and discussed. The microwave surface resistance data is...