Superconducting Quantum Interference Devices
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Study of the magnetic properties of AuPd nanoparticles / Estudo das propriedades magneticas de nanoparticulas de AuPd
Nanopartículas (NPs) metálicas, filmes ultrafinos e sistemas nano-estruturados têm motivado vários estudos teóricos e experimentais devido a novas propriedades eletrônicas, óticas e magnéticas destes materiais. Nas NPs, tais propriedades estão diretamente relacionadas aos efeitos de tamanho (size effect) e superfície, os quais afetam suas estrutura
Publicado em: 2008
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2. Ligas magnéticas NiFe e NiFeCo eletrodepositadas, voltadas para aplicações em micro-sensores magnéticos tipo fluxgate planar / Electrodeposited NiFe and NiFeCo films for planar fluxgate sensors
This work presents the results about the fabrication and characterization of thin films of NiFe and NiFeCo alloys. The attempts to construct the planar fluxgate are also presented. Galvanostatic electrodeposition using an electrolytic solution containing Ni and Fe was used: NiSO4 (0,7 mol/l); NiCl2 (0,02 mol/l); FeSO4 (0,03 mol/l); H3BO3 (0,4 mol/l) and C7H5
Publicado em: 2007
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3. CRESCIMENTO, ESTRUTURA E POLARIZAÇÃO DE TROCA EM BICAMADAS FERROMAGNETO / ANTIFERROMAGNETO PREPARADAS POR DEPOSIÇÃO EM CONDIÇÕES DE EPITAXIA POR FEIXE MOLECULAR: Fe / EuTe(111), Fe / Ni50Mn50(001) e Ni1-xFex / Fe50Mn50
Magnetic interaction at interfaces between different layered magnetic materials is an important current topic in physics and materials science, particularly when combining ferromagnetic metals and semiconductors. The exchange bias effect associated with the exchange coupling between antiferromagnetic (AFM) and ferromagnetic (FM) systems, has been extensively
Publicado em: 2007
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4. SQUIDs and inverse problem techniques in nondestructive evaluation of metals
Superconducting Quantum Interference Devices coupled to gradiometers were used to detect flaws in metals. We detected flaws in aluminum samples carrying current, measuring fields at lift-off distances up to one order of magnitude larger than the size of the flaw. Configured as a susceptometer we detected surface-braking flaws in steel samples, measuring the
Brazilian Journal of Physics. Publicado em: 2001-12