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

• Processo: 03/08623-5
• Modalidade de apoio: Bolsas no Exterior - Pesquisa
• Data de Início da vigência: 01 de maio de 2004
• Data de Término da vigência: 30 de setembro de 2004
• Área de conhecimento: Ciências Exatas e da Terra - Física - Física da Matéria Condensada
• Pesquisador responsável: Claudio Antonio Cardoso
• Beneficiário: Claudio Antonio Cardoso
• Pesquisador Anfitrião: Thirumalai Venkatesan
• Instituição Sede: Pessoa Física
• Instituição Anfitriã: University of Maryland, College Park, Estados Unidos
• Assunto(s): Nanotecnologia Spintrônica
• Palavra(s)-Chave do Pesquisador: Magnetoresistencia Colossal | Nanotecnologia | Oxidos Magneticos | Spintronica

Resumo

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)