<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pissas, M.</style></author><author><style face="normal" font="default" size="100%">Stamopoulos, D.</style></author><author><style face="normal" font="default" size="100%">Koutantos, S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A new method for the estimation of H-c2 anisotropy in polycrystalline MgB2 samples</style></title><secondary-title><style face="normal" font="default" size="100%">JOURNAL OF SUPERCONDUCTIVITY</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">17</style></volume><pages><style face="normal" font="default" size="100%">259 - 263</style></pages><isbn><style face="normal" font="default" size="100%">0896-1107</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">By using isothermal magnetization measurements in polycrystalline MgB2 samples, we estimate the H-c2(c) in the interval [0, T-c]. By combining these measurements to the estimated H-c2(ab) from the onset of the diamagnetic transition in isofield and isothermal magnetic measurements, an estimation of the anisotropy parameter can be achieved. The H-c2(c) values coming from high quality polycrystalline samples agrees nicely to those obtained on single crystals. Our results show a temperature variation of the gamma(T) = H-c2(ab) / H-c2(c) with gamma(T-c) approximate to 3.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue></record></records></xml>