Title of article
Magnetic disorder induced enhanced magneto-resistance in La0.5Sr0.5Co1−xRuxO3
Author/Authors
Sundar Manoharan، نويسنده , , S and Sahu، نويسنده , , Ranjan K and Elefant، نويسنده , , D and Schneider، نويسنده , , C.M، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
4
From page
103
To page
106
Abstract
We observe a sharp increase in negative magneto-resistance ratio up to 40% for x=0.1, in La0.5Sr0.5Co1−xRuxO3 which is due to the magnetic disorder induced by an anti-ferromagnetic interaction between Co and Ru ions. We also observe a metal to insulator and a ferromagnetic to anti-ferromagnetic transition for 0≤x≤0.3. Ruthenium (IV) ion disrupts an intermediate spin state of cobalt (Co3+:t2g5eg1), forcing a double exchange mediated ferromagnetic state to an anti-ferromagnetic spin state for x≥0.2.
Keywords
A. Magnetically ordered materials , D. Electronic transport , D. Order–disorder effects
Journal title
Solid State Communications
Serial Year
2003
Journal title
Solid State Communications
Record number
1787719
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