Giant magnetoimpedance and colossal magnetoresistance in La[sub 0.75]Sr[sub 0.25]MnO[sub 3] at room temperature

2002 ◽  
Vol 91 (12) ◽  
pp. 10003 ◽  
Author(s):  
Hongwei Qin ◽  
Jifan Hu ◽  
Juan Chen ◽  
Yizhong Wang ◽  
Zhenxi Wang
Keyword(s):  
Colossal Magnetoresistance ◽  
Room Temperature ◽  
Giant Magnetoimpedance

scholarly journals Room temperature giant magnetoimpedance in polycrystalline La0.75Ba0.25MnO3

AIP Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 055913 ◽  
Author(s):  
Pawan Kumar ◽  
Km Rubi ◽  
R. Mahendiran
Keyword(s):  
Room Temperature ◽  
Giant Magnetoimpedance

scholarly journals Room-Temperature Low-Field Colossal Magnetoresistance in Double-Perovskite Manganite

2019 ◽  
Vol 123 (12) ◽  
Author(s):  
S. Yamada ◽  
N. Abe ◽  
H. Sagayama ◽  
K. Ogawa ◽  
T. Yamagami ◽  
...  
Keyword(s):  
Colossal Magnetoresistance ◽  
Room Temperature ◽  
Double Perovskite ◽  
Perovskite Manganite ◽  
Low Field

Room temperature giant magnetoimpedance in La0.7Ba0.15Sr0.15MnO3 compound

2010 ◽  
Vol 120 (2-3) ◽  
pp. 468-471 ◽  
Author(s):  
Soma Das ◽  
D. Dhak ◽  
M.S. Reis ◽  
V.S. Amaral ◽  
T.K. Dey
Keyword(s):  
Room Temperature ◽  
Giant Magnetoimpedance

Electro-resistive Memory Effect in Colossal Magnetoresistive Films and Performance Enhancement by Post-annealing

2000 ◽  
Vol 648 ◽  
Author(s):  
Shangqing Liu ◽  
Naijuan Wu ◽  
Alex Ignatiev ◽  
Gustavo Tavizon ◽  
Christina Papagianni
Keyword(s):  
Nonvolatile Memory ◽  
Colossal Magnetoresistance ◽  
Room Temperature ◽  
Performance Enhancement ◽  
Electric Pulse ◽  
Zero Magnetic Field ◽  
Colossal Magnetoresistive ◽  
Change Effect ◽  
Electrical Pulses ◽  
And Performance

AbstractColossal magnetoresistive thin films have shown a large electric-pulse-induced resistivity change effect in zero magnetic field and at room temperature. The resistance of such films can be both decreased and increased through multiple nonvolatile intermediate levels by short electrical pulses. The effect provides a potential to develop a novel nonvolatile memory with high density, fast speed, and low power-consumption. An example of this effect has been seen for Pr0.7Ca0.3MnO3 films within which the thermal behavior of the film revealed a method for signal enhancement through annealing. An increase of 700% of the resistance ratio has been demonstrated for a film annealed at 170oC for 30 min. The effect is also observed to be active at room temperature but inefficient at low temperatures, which is interestingly contrary to the behavior of the colossal magnetoresistance effect and provides a clue to understanding the effect.

scholarly journals Effect of the Grain Size on the Magnetic Phase Separation in La0.8Sr0.2MnO3 by Magnetic Force Microscopy

2012 ◽  
Vol 18 (S5) ◽  
pp. 101-102
Author(s):  
P. De Sousa ◽  
N. Panwar ◽  
I. Bdikin ◽  
A. L. Kholkin ◽  
C. M. Fernandes ◽  
...  
Keyword(s):  
Grain Size ◽  
Phase Separation ◽  
Colossal Magnetoresistance ◽  
Room Temperature ◽  
Magnetic Phase ◽  
Magnetic Domain ◽  
Charge Ordering ◽  
Perovskite Manganites ◽  
Fundamental Study ◽  
Metallic Clusters

Perovskite manganites have been the focus of worldwide research during the last two decades because of the observation of colossal magnetoresistance (CMR) effect. These materials have potential applications in magnetic field sensors, spin filters, infrared bolometers and cathodes for solid oxide fuel cells. Such manganites are also important from the fundamental study viewpoint as they offer interplay among various degrees of freedom viz. spin, lattice and charge ordering. Moreover, phase separation may occur in manganites with low concentration of the dopant. In such scenario, ferromagnetic metallic clusters are embedded in antiferromagnetic insulating matrix. The fraction of these magnetic phases may vary from the nano- to micro-scale. With higher dopant concentration, the percolation of these magnetic metallic clusters leads to the apparent CMR effect. In this study we focus our attention to the low doped La0.8Sr0.2MnO3 (LSMO) manganite and investigate the possible magnetic phase separation and effect of variation in grain size on the magnetic domain size. La0.8Sr0.2MnO3 possesses Curie temperature (TC) higher than room temperature, therefore the material is supposed to be in the magnetic state at room temperature.

scholarly journals Magnetic properties and giant magnetoimpedance of surface modified Co-based amorphous ribbons with carbon covering

2018 ◽  
Vol 185 ◽  
pp. 10001 ◽  
Author(s):  
Elizaveta V. Golubeva ◽  
Anna A. Chlenova ◽  
Elena A. Stepanova ◽  
Galina V. Kurlyandskaya
Keyword(s):  
Room Temperature ◽  
Amorphous Ribbon ◽  
Surface Layers ◽  
Giant Magnetoimpedance ◽  
Near Surface ◽  
Amorphous Ribbons ◽  
Thin Carbon ◽  
Magnetic Biosensor ◽  
Surface Modified ◽  
Partial Compensation

Fe3Co66Cr3Si16B12 and Fe6Co60Ni10Si14B10 amorphous ribbons were surface modified in toluene at room temperature. Such a treatment resulted in deposition of thin carbon-based layer. As a result of the carbon covering deposition the stress distribution in the near-surface layers was changed due to partial compensation of the initial quenching stresses. Comparative analysis of magnetic and magnetoimpedance properties of as-quenched and surface modified ribbons confirms changes in effective magnetic anisotropy as a result of surface treatment. An increase of the corrosion resistance of the ribbons with carbon covering can be useful for the development amorphous ribbon based magnetic biosensor.

Colossal magnetoresistance in amino-functionalized graphene quantum dots at room temperature: manifestation of weak anti-localization and doorway to spintronics

Nanoscale ◽  
2016 ◽  
Vol 8 (15) ◽  
pp. 8245-8254 ◽  
Author(s):  
Rajarshi Roy ◽  
Ranjit Thapa ◽  
Gundam Sandeep Kumar ◽  
Nilesh Mazumder ◽  
Dipayan Sen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Colossal Magnetoresistance ◽  
Room Temperature ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene
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