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

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

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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
JournalJournal of Physics Condensed Matter
Volume12
Issue number25
DOIs
Publication statusPublished - Jun 26 2000
Externally publishedYes

Fingerprint

Magnetoresistance
Magnetic structure
temperature
magnetic fields
Magnetic fields
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Unusually large negative magnetoresistance around 200 K in the alloys Gd1-xLaxMn2Ge2. / Sampathkumaran, E. V.; Majumdar, Subham; Mallik, R.; Vijayaraghavan, R.; Wada, Hirofumi; Shiga, M.

In: Journal of Physics Condensed Matter, Vol. 12, No. 25, 26.06.2000.

Research output: Contribution to journalArticle

Sampathkumaran, E. V. ; Majumdar, Subham ; Mallik, R. ; Vijayaraghavan, R. ; Wada, Hirofumi ; Shiga, M. / Unusually large negative magnetoresistance around 200 K in the alloys Gd1-xLaxMn2Ge2. In: Journal of Physics Condensed Matter. 2000 ; Vol. 12, No. 25.
@article{f92ee8f4912040639296aae97e5586b5,
title = "Unusually large negative magnetoresistance around 200 K in the alloys Gd1-xLaxMn2Ge2",
abstract = "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.",
author = "Sampathkumaran, {E. V.} and Subham Majumdar and R. Mallik and R. Vijayaraghavan and Hirofumi Wada and M. Shiga",
year = "2000",
month = "6",
day = "26",
doi = "10.1088/0953-8984/12/25/103",
language = "English",
volume = "12",
journal = "Journal of Physics Condensed Matter",
issn = "0953-8984",
publisher = "IOP Publishing Ltd.",
number = "25",

}

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, Hirofumi

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.

UR - http://www.scopus.com/inward/record.url?scp=0033716486&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033716486&partnerID=8YFLogxK

U2 - 10.1088/0953-8984/12/25/103

DO - 10.1088/0953-8984/12/25/103

M3 - Article

VL - 12

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

SN - 0953-8984

IS - 25

ER -