PL EN


Preferences help
enabled [disable] Abstract
Number of results
2008 | 113 | 1 | 351-354
Article title

Magnetotransport Properties of CaTi_xRu_{1-x}O_3 (x=0, 0.07)

Content
Title variants
Languages of publication
EN
Abstracts
EN
Electrical resistance, transversal magnetoresistance and the Hall effect were studied on polycrystalline CaTi_xRu_{1-x}O_3 (x=0, 0.07) samples using a conventional Quantum Design PPMS-9 equipment in the temperature range 2-300 K and magnetic field up to 9 T. Substantial differences were found between the two samples: (i) opposite to the metallic character of CaRuO_3, the substituted sample has insulating-like electrical resistance;(ii) the magnetoresistance of the substituted sample changes the sign from negative to positive values with increasing temperature. The magnetoresistance of CaRuO_3 is negative, the sign reversal is induced by magnetic field and only at temperatures below 15 K, such a behaviour is predicted for clustered systems;(iii) the Hall voltage in pure CaRuO_3 also changes sign from negative to positive values above 35 K. This temperature coincides with the observed magnetic transition temperature, indicating that the magnetic state and the carrier character interrelate.
Keywords
EN
Contributors
author
  • Centre of Low Temperature Physics of the P.J. Šafárik University, and the Slovak Academy of Science, Park Angelinum 9, 04154 Košice, Slovakia
author
  • Centre of Low Temperature Physics of the P.J. Šafárik University, and the Slovak Academy of Science, Park Angelinum 9, 04154 Košice, Slovakia
author
  • Centre of Low Temperature Physics of the P.J. Šafárik University, and the Slovak Academy of Science, Park Angelinum 9, 04154 Košice, Slovakia
author
  • Institute of Physics, AS CR, Na Slovance 2, 18221 Prague, Czech Republic
author
  • Institute of Physics, AS CR, Na Slovance 2, 18221 Prague, Czech Republic
author
  • The "Vinča" Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia
References
  • 1. K. Yoshimura, T. Imai, T. Kiyama, K.R. Thurber, A.W. Hunt, K. Kosuge, Phys. Rev. Lett. 83, 4397 (1999)
  • 2. T. He, R.J. Cava, Phys. Rev. B 63, 172403 (2001)
  • 3. A. Zorkovská, A. Baran, I. Bradarić, I. Savić, J.Šebek, E.Šantavá, P. Svoboda, D. Marinčev, S. Kohout, H. Keller, A. Feher, J. Magn. Magn. Mater. 316, e699 (2007)
  • 4. L. Klein, L. Antognazza, T.H. Geballe, M.R. Beasley, A. Kapitulnik, Phys. Rev. B 60, 1448 (1999)
  • 5. F. Steglich, B. Buschinger, P. Gegenwart, M. Lohmann, R. Helfrich, C. Langhammer, P. Hellmann, L. Donnevert, S. Thomas, A. Link, C. Geibel, M. Lang, G. Sparn, W. Assmus, J. Phys., Condens. Matter 8, 9909 (1996)
  • 6. X.R. Wang, S.C. Ma, X.C. Xie, Europhys. Lett. 45, 368 (1999)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n1086kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.