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Structural and physical properties of colossal magnetoresistance manganites and diluted magnetic semiconductors for fabrication of nanostructured spintronic devices

Grant number: 03/08623-5
Support Opportunities:Scholarships abroad - Research
Effective date (Start): May 01, 2004
Effective date (End): September 30, 2004
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Claudio Antonio Cardoso
Grantee:Claudio Antonio Cardoso
Host Investigator: Thirumalai Venkatesan
Host Institution: Pessoa Física
Research place: University of Maryland, College Park, United States  


Our basic goal is to study oxides with high spin polarization and its potential for application in spintronic devices. We are going to explore two distinct classes of materials: CMR manganites and diluted magnetic semiconductors (DMS). On the, CMR front, we will investigate the implications of a tunable kinetic energy and its fundamental consequence, multiphase coexistence, for basic materials properties, surface and interface behavior, and exploratory devices. On The DMS front our focus will be on lattice location and evaluation of the microscopic chemical and structural aspects of the samples. In this context we will use the Rutherford Backscattering Channeling technique in conjugation with other methods such as high-resolution cross-section TEM, Photoelectron spectroscopy, XAS and XMCD, Raman and optical absorption etc. (AU)

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