Electrical properties of carbon doped EuB6

✍ Scribed by M. Bat'ková; I. Bat'ko; M. Mihalik; E. S. Konovalova; N. Shitsevalova; Y. Paderno

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 321 KB
• Volume: 3
• Category: Article
• ISSN: 1862-6351
• DOI: 10.1002/pssc.200562485

✦ Synopsis

Abstract

We report results of electrical resistivity and tunnelling spectroscopy studies of carbon doped EuB~6~ showing a colossal magnetoresistance effect. Performed tunnelling spectroscopy studies confirm a metallic‐like nature of the system. The electrical resistivity studies reveal, it is a spin‐disorder scattering that dominates in the temperature region 10.3–20 K and the magnetic phase transition temperature is T ~c~ = 4.1 K. Due to similarities of the temperature dependence of the resistivity with ones reported for stoichiometric and lanthanum substituted EuB~6~, the resistivity behavior in the intermediate temperature region is expected to be strongly influenced by the formation of magnetic polarons. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)