TY - JOUR
T1 - Unusually large negative magnetoresistance around 200 K in the alloys Gd1-xLaxMn2Ge2
AU - Sampathkumaran, E. V.
AU - Majumdar, Subham
AU - Mallik, R.
AU - Vijayaraghavan, R.
AU - Wada, H.
AU - Shiga, M.
PY - 2000/6/26
Y1 - 2000/6/26
N2 - 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.
AB - 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.
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U2 - 10.1088/0953-8984/12/25/103
DO - 10.1088/0953-8984/12/25/103
M3 - Article
AN - SCOPUS:0033716486
SN - 0953-8984
VL - 12
SP - L399-L403
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 25
ER -