Magnetization reversal, giant exchange bias effect and magnetoresistance in oxygen vacancy ordered Sr4Fe3CoO11
MARIK, Sourav
Laboratoire de cristallographie et sciences des matériaux [CRISMAT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Laboratoire de cristallographie et sciences des matériaux [CRISMAT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
CHENNABASAPPA, Madhu
Siddaganga Institute of Technology
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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Siddaganga Institute of Technology
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
MARIK, Sourav
Laboratoire de cristallographie et sciences des matériaux [CRISMAT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Laboratoire de cristallographie et sciences des matériaux [CRISMAT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
CHENNABASAPPA, Madhu
Siddaganga Institute of Technology
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
< Reduce
Siddaganga Institute of Technology
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Language
en
Article de revue
This item was published in
Journal of Physics D: Applied Physics. 2019, vol. 52, n° 47, p. 475001 (6 p.)
IOP Publishing
English Abstract
We report the structural, magnetic, exchange bias, and magnetotransport effect in Sr4Fe3CoO11. The material crystallizes in the orthorhombic Cmmm space group. It shows antiferromagnetic (G-type) transition (TN = 255 K), ...Read more >
We report the structural, magnetic, exchange bias, and magnetotransport effect in Sr4Fe3CoO11. The material crystallizes in the orthorhombic Cmmm space group. It shows antiferromagnetic (G-type) transition (TN = 255 K), along with interesting temperature-induced magnetization reversal (TComp. = 47 K measured at 100 Oe). The magnetic reversal can be elucidated considering the increased magnetocrystalline anisotropy with Co substitution. Magnetoresistance measurements show an interesting crossover from the negative to positive side at ∼100 K. The negative magnetoresistance reaches 80% at 25 K in 7 T magnetic field. Giant exchange bias effect is observed below TN under field cooling condition. The origin of the negative magnetoresistance and giant exchange bias in this sample can be attributed to the magnetic frustration.Read less <
English Keywords
Compensated ferrimagnet
Giant exchange bias
Magnetization reversal
Origin
Hal imported