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dc.creator Lima O. F. de
dc.creator Cardoso C. A.
dc.date 2003
dc.date.accessioned 2013-06-01T10:48:08Z
dc.date.available 2013-06-01T10:48:08Z
dc.date.issued 2013-06-01
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332003000400014
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2003&volume=33&issue=4&spage=709
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/8306
dc.description The first direct measurement of an anisotropic superconducting property in MgB2 was achieved for the bulk nucleation field Hc2, in a sample of aligned crystallites. It was found a ratio gamma(T) = <img id="_x0000_i1026" src="../../../img/revistas/bjp/v33n4/a14img01.gif" align=absbottom>/ <img id="_x0000_i1027" src="../../../img/revistas/bjp/v33n4/a14img02.gif" align=absbottom > or = 1.6 - 1.9, for T varying from 32 K to 26K, between H applied parallel to the ab plane, and along the c direction. The anisotropy of the induced critical current density was evaluated through the Bean model to be <img id="_x0000_i1028" src="../../../img/revistas/bjp/v33n4/a14img03.gif" align=absbottom>/ <img id="_x0000_i1029" src="../../../img/revistas/bjp/v33n4/a14img04.gif" align=absbottom>~ 1.5. We present here a brief review of these studies in connection with current results found in the literature.
dc.publisher Sociedade Brasileira de Física
dc.source Brazilian Journal of Physics
dc.title Anisotropy in MgB2


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