1Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
2Advanced Analysis Centre, Korea Institute of Science and Technology, Seoul 136-791, S. Korea
3Department of Physics, Indian Institute of Technology, New Delhi 110 016, India
4National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
5National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
6Department of Applied Physics, Krishna Engineering College, Ghaziabad, Uttar Pradesh 201007, India
Adv. Mater. Lett., 2014, 5 (7), pp 372-377
DOI: 10.5185/amlett.2013.105560
Publication Date (Web): Apr 27, 2014
Copyright © IAAM-VBRI Press
E-mail: jitendra_singh2029@rediffmail.com, asokaniuac@gmail.com
MgO based magnetic tunnel junctions (MTJs) exhibit high tunneling magnetoresistance (TMR) and have potential applications in magnetic random access memories. This study addresses the role of interface in the Fe/MgO/Fe based MTJs. For present investigation, Fe/MgO/Fe multilayer stack on Si substrates is grown by electron beam evaporation method and has been investigated for structural, magnetic and electronic properties. All the layers in the stack were of polycrystalline in nature as evidenced from X-ray diffraction studies, and the magnetic measurements show the attributes perpendicular magnetic anisotropy. Results from near edge X-ray absorption spectra at Fe L-edges measured by total electron yield mode and X-ray reflectometry indicate the formation of FeOx at the Fe/MgO interface. These are associated with hybridization of Fe (3d)-O(2p) levels at Fe/MgO interface in the stack and thickness of layers in the stacks. Absence of magnetic de-coupling between top and bottom ferromagnetic layers has been attributed to interface roughness and oxidation at Fe/MgO interface. This study highlights the role of interface and oxidation that need to be considered for improving the TMR for devices.
Magnetic multilayers, e-beam evaporation, X-ray absorption spectroscopy, X-ray reflectometry
Water and Sanitation Management: During and after COVID-19 Pandemic
Polymeric Energy Materials: Development and Challenges
Influence of Different Copolymer Based Compatibilizers on Performance of Pristine and Recycled PP/PE blends
Bio Ceramics: New Material from Mangrove Bark
Hybrid Physical Chemical Vapour Deposition (HPCVD) of Superconducting MgB2 Thin Films on three Dimensional Copper Substrates
Photoinduced Electron Transfer Reactions of tris(4,4’-dimethoxy-2,2’-bipyridyl)ruthenium(II)cation with Quinones in Aqueous Medium
A Comparative Study of Green Synthesized AgNPs using Carissa Carandas and Nerium indicum Leaves and its Activities against Selected Human Pathogens and MCF 7 Cell
Design and Modelling of Carbon Fiber Grid Structure based Carbon/Epoxy Composites for Enhanced Microwave Absorbing Properties
Elaboration and Characterization of Macroporous Bioceramics using Polymeric Sponge Replication Method
Advanced Healthcare Biomaterials
Piezoelectric Alternative Energy Sources as a Part of the Global Energy Concerns – Future Prospects in the Science and Market
Rectify the Injury-Induced Microenvironment Imbalance in Peripheral Nerve Repair
A Mini Review on Biodegradable Magnesium Alloy Vascular Stent
Prospective Applications of Marine Oriented Materials in the Repair of Peripheral Nerve Injury
Design and Implementation of Dynamic FPAA Based Interface Circuit for Thin Film Lead-Free Piezoelectric Sensors
An Аpproach for Nanostructuring of Piezoelectric Materials by Template-assisted Growth in Porous Aluminum Oxide
Study of Sputtered Barium Strontium Titanate Films for Energy Harvesting Applications
The Effect of Bias on Properties of DLC Coatings for Artificial Joints
Fabrication of Tens-micron-sized Functionalized Polystyrene Microspheres for Utilization in Chiral Drug Isolation
Copyright ©2010-2020 VBRI Press
Full Article