Record Details

Optimization of La0.7Sr0.3MnO3 thin film by pulsed laser deposition for spin injection

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Optimization of La0.7Sr0.3MnO3 thin film by pulsed laser deposition for spin injection
 
Creator JAIN, S
SHARMA, H
SHUKLA, AK
TOMY, CV
PALKAR, VR
TULAPURKAR, A
 
Subject LSMO
Spin injection
Pulsed laser deposition (PLD)
Insulator to metal transition
Colossal magnetoresistance (CMR)
STRAIN
 
Description We have investigated low temperature magnetic properties of La0.7Sr0.3MnO3 (LSMO) thin films on SrTiO3 (STO) substrate deposited by pulsed laser deposition (PLO). We observed a large change in the Curie temperature T-C when the LSMO film thickness is reduced from 4 nm (T-C similar to 280 K) to 2 nm (T-C similar to 100 K), which is a result of high strain present at the STO-LSMO interface. The presence of the strain is confirmed by a grazing angle X-ray diffraction (XRD) technique where a particular peak is shifted away from the bulk peak position as we decrease the thickness. In a LSMO/Pb[ZryTi1-y]O-3(PZT)/LSMO magnetic tunnel junction (MTJ), these LSMO thin films can be used for spin injection into the tunnel barrier. Here spin current can be manipulated by changing the strain present at the LSMO-PZT interface by using piezoelectric properties of PZT. (C) 2014 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2014-12-28T16:28:43Z
2014-12-28T16:28:43Z
2014
 
Type Article
 
Identifier PHYSICA B-CONDENSED MATTER, 448103-106
0921-4526
1873-2135
http://dx.doi.org/10.1016/j.physb.2014.02.061
http://dspace.library.iitb.ac.in/jspui/handle/100/16885
 
Language English