Effects of Neutron Irradiation on Carbon Doped MgB2 Wire Segments (2005)
Wilke, R. H. T., Bud'ko, S. L., Canfield, P. C., Finnemore, D. K., Suplinskas, Raymond J., Farmer, J., ...
We have studied the evolution of superconducting and normal state properties of neutron irradiated Mg(B$_{.962}$C$_{.038}$)$_2$ wire segments as a function of post exposure annealing time and...
Synthesis of Mg(B$_{1-x}$C$_x$)$_2$ Powders (2005)
Wilke, R. H. T., Bud'ko, S. L., Canfield, P. C., Finnemore, D. K., Hannahs, S. T.
We have synthesized bulk Mg(B$_{1-x}$C$_x$)$_2$ from a mixture of elemental Mg, B, and the binary compound B$_4$C. Carbon incorporation was dramatically improved by a two step reaction process at an...
Superconductivity in MgB_2 doped with Ti and C (2004)
Wilke, R. H. T., Bud'ko, S. L., Canfield, P. C., Kramer, M. J., Wu, Y. Q., Finnemore, D. K., ...
Measurements of the superconducting upper critical field, H_{c2}, and critical current density, J_c, have been carried out for MgB_2 doped with Ti and/or C in order to explore the problems...
Wilke, R. H. T., Bud'ko, S. L., Canfield, P. C., Finnemore, D. K., Suplinskas, Raymond J., Hannahs, S. T.
The upper critical field, $H_{c2}$, of Mg(B$_{1-x}$C$_x$)$_2$ has been measured in order to probe the maximum magnetic field range for superconductivity that can be attained by C doping. Carbon doped...
Intra-granular Ti precipitates in MgB2 (2003)
Kramer, M. J., Bud'ko, S. L., Canfield, P. C., Wilke, R. H. T., Finnemore, D. K., Suplinskas, R. J.
Superconducting magnesium diboride has been prepared with intra-granular TiB precipitates that have appropriate size and spacing for the pinning of superconducting vortices. The TiB particles have a...
CVD routes to MgB2 conductors (2003)
Finnemore, D. K., Straszheim, W. E., Bud'ko, S. L., Canfield, P. C., Anderson Jr, N. E., Suplinskas, R. J.
Processing methods are described for the development of magnesium diboride wire using the chemical vapor deposition (CVD) to produce long lengths of suitably doped starting boron fiber. It is found...
Titanium additions to MgB2 conductors (2003)
Anderson, N. E., Jr., Straszheim, W. E., Bud'ko, S. L., Canfield, P. C., Finnemore, D. K., ...
A series of doping experiments are reported for MgB2 conductors that have been synthesized using doped boron fibers prepared by chemical vapor deposition(CVD) methods. Undoped MgB2 samples prepared...
An Overview of the Basic Physical Properties of MgB$_2$ (2002)
Canfield, P. C., Bud'ko, S. L., Finnemore, D. K.
The basic physical properties of MgB$_2$ have been well established over the past two years of intensive research. At this point there is a general consensus about the values for the isotope shift,...
Vortex fluctuations in superconducting La-Sr-Cu-O (2001)
Huh, Yung M., Finnemore, D. K.
Vortex fluctuations in the $La_{2-x}Sr_{x}CuO_{4+\delta}$ system have been studied as a function of magnetic field, temperature and carrier concentration in order to determine the dimensionality of...
Huh, Yung M., Finnemore, D. K.
Thermodynamic critical field curves have been measured for $La_{2-x}Sr_{x}CuO_{4+\delta}$ over the full range of carrier concentrations where superconductivity occurs in order to determine changes in...
Magneto-optical studies of the uniform critical state in bulk MgB2 (2001)
Polyanskii, A. A., Gurevich, A., Jiang, J., Larbalestier, D. C., Bud'ko, S. L., Finnemore, D. K., ...
We present a detailed magneto-optical investigation of the magnetic flux penetration in polycrystalline MgB2 slabs made by direct reaction of B and Mg. Our results unambiguously indicate a uniform,...
Microwave properties of superconducting $MgB_{2}$ (2001)
Hakim, N., Parimi, P. V., Kusko, C., Sridhar, S., Canfield, P. C., Bud'ko, S. L., ...
Measurements of the $10GHz$ microwave surface resistance of dense $MgB_{2}$ wire and pellet are reported. Significant improvements are observed in the wire with reduction of porosity. The data lie...
Synthesis and Processing of $MgB_2$ powders and wires (2001)
Cunningham, C. E., Petrovic, C., Lapertot, G., Bud'ko, S. L., Laabs, F., Straszheim, W., ...
Sintered powders and wires of superconducting $MgB_2$ have been fabricated under a variety of conditions in order to determine details of the diffusion of the $Mg$ into $B$ and to study the types of...
Superconductivity in Dense $MgB_2$ Wires (2001)
Canfield, P. C., Finnemore, D. K., Bud'ko, S. L., Ostenson, J. E., Lapertot, G., Cunningham, C. E., ...
$MgB_2$ becomes superconducting just below 40 K. Whereas porous polycrystalline samples of $MgB_2$ can be synthesized from boron powders, in this letter we demonstrate that dense wires of $MgB_2$ can...
Thermodynamic and Transport Properties of Superconducting $Mg^{10}B_2$ (2001)
Finnemore, D. K., Ostenson, J. E., Bud'ko, S. L., Lapertot, G., Canfield, P. C.
Transport and thermodynamic properties of a sintered pellet of the newly discovered $MgB_2$ superconductor have been measured to determine the characteristic critical magnetic fields and critical...
Thermodynamic and Transport Properties of Superconducting Mg10B2 (2001)
Bud'ko, S. L., Canfield, P. C., Finnemore, D. K., Lapertot, G., Ostenson, J. E.
Superconductivity in Dense MgB2 Wires (2001)
Bud'ko, S. L., Canfield, P. C., Cunningham, C. E., Finnemore, D. K., Lapertot, G., Ostenson, J. E., ...
Temperature Dependence of Critical Current Superconducting for In Situ Composites. (1998)
Finnemore, D. K., Ostenson, J. E., Gibson, E. D, Verhoeven, J. D., Doyle, T. B.
The critical current for in situ prepared cu-nb3sn microfilamentary composites has been measured as a function of both temperature and magnetic field in order to determine the suitability of these...