Anomalous transport properties of carbon-doped EuB.sub.6./sub..

0355766 - FZÚ 2011 RIV PL eng J - Journal Article
Baťková, M. - Batko, I. - Filipov, V. - Flachbart, K. - Sechovský, V. - Shitsevalova, N. - Šantavá, Eva - Šebek, Josef
Anomalous transport properties of carbon-doped EuB₆.
Acta Physica Polonica A. Roč. 118, č. 5 (2010), s. 893-894. ISSN 0587-4246. E-ISSN 1898-794X
Institutional research plan: CEZ:AV0Z10100520
Keywords : magnetoresistance * thermal properties * Eu boride
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.467, year: 2010
http://przyrbwn.icm.edu.pl/APP/PDF/118/a118z5p073.pdf

We report electrical, magnetic and thermal properties of EuB6-xCx single crystals with an estimated value of x ~ 0.07. Our studies reveal an antiferromagnetic phase transition at TN ~ 6.7 K. Electrical resistivity at zero magnetic field shows a pronounced resistivity maximum at TM ~ 7 K. With increasing applied magnetic field the maximum moves to lower temperature and becomes totally suppressed at the field of 9 T. Observed magnetoresistance is negative in the whole studied temperature range 2–20 K. The origin of such magnetoresistance is associated with formation of mixed magnetic structure in the system due to fluctuation of carbon concentration.
Permanent Link: http://hdl.handle.net/11104/0194457