Unusually large negative magnetoresistance around 200 K in the alloys Gd1-xLaxMn2Ge2

E. V. Sampathkumaran, Subham Majumdar, R. Mallik, R. Vijayaraghavan, H. Wada, M. Shiga

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We report here the observation of large negative magnetoresistance (MR) at 200 K (for instance, about -5.5% for the application of a magnetic field of 70 kOe) in magnetic alloys, Gd1-xLaxMn2Ge2 (x = 0.07 and 0.08). There is a distinct sign reversal of MR, with a comparable magnitude, for x = 0.07 at 123 K thereby establishing the presence of temperature dependent magnetic structures. The observation of a large MR at temperatures as high as 200 K is uncommon among the bulk form alloys.

Original languageEnglish
Pages (from-to)L399-L403
JournalJournal of Physics Condensed Matter
Issue number25
Publication statusPublished - Jun 26 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics


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