Objective
This project explores micro and nanotechnology processes for the formation of stable magnetic constrictions that exhibit ballistic magnetoresistance, which is up to one or two order of magnitude larger (1) than the giant magnetoresistance used in present magnetic reading, and are nanoconstrictions (vertical, planar), using local probes, electrochemistry electron microscopy and nanocontacts in this films (1) N. Garcia, M.Munoz and Y.-W. Zhao, Physical Review Letters 82, 2923 (1999) This project explores micro and nanotechnology processes for the formation of stable magnetic constrictions that exhibit ballistic magnetoresistance, which is up to one or two order of magnitude larger (1) than the giant magnetoresistance used in present magnetic reading, and are nanoconstrictions (vertical, planar), using local probes, electrochemistry electron microscopy and nanocontacts in this films (1) N. Garcia, M.Munoz and Y.-W. Zhao, Physical Review Letters 82, 2923 (1999).
OBJECTIVES
The objective of this project is to explore micro and nanotechnology fabrication procedures for the formation of stable magnetic constrictions. This is the first crucial step towards the development of magnetic reading heads and sensors of unprecedented sensitivity and resolution. Magnetic constrictions provine a ballistic, very large magnetoresistance (BMR) at a resistance in the kohm range and spacially confined to a few nm dimensions. The BMR can be up to two orders of magnitude larger that the giant magnetoresistance used at present. Also, theory for understanding spin scattering on domain walls in nanosystems as well shifting of domains walls under external magnetic field is needed.
DESCRIPTION OF WORK
A magnetic constriction exhibiting a BMR is based on quantum conduction and is essentially a nanometer sized, conductive connection of width comparable with the electron wavelenght and of length smaller than the electron mean free path between two conductive magnetic reservoirs of larger dimension. Quantum conduction and BMR in metal have so far been studied in semitransient configurations, e.g. moving two metallic pieces in or out of contact. Our goal is to produce constrictions in stable configurations employing micro and nanotechnology fabrication procedures. We envisage two promising approaches for fabrication: 1) Vertical structuring: nanoscopic indentation in a thin insulator, filled with the appropriate material providing the constriction. A variety of options for indentation, filling processes, and insulator layer will be considered; 2) Planar structuring of the constriction: we consider four options for the final nanostructuring of the constriction: local probes (AFM, STM, MFM, SNOM, etc.), electron microscopy, and thin films nanocontacts. Parallel to the experimental work, the theory is necessary for understanding of nanomagnetism and magnetic domains walls motion in nanostructures. This will also be developed.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences electrochemistry
- engineering and technology nanotechnology
- natural sciences physical sciences optics microscopy electron microscopy
- engineering and technology materials engineering coating and films
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering sensors
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
28006 MADRID
Spain
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.