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Size and doping effects on the improvement of the low-temperature magnetic properties of magnetically aligned cobalt ferrite nanoparticles
(Elsevier, 2022-02)
The macroscopic magnetic behavior of nanoparticulated systems is the result of several contributions, ranging from the intrinsic structural properties of the nanoparticles to their spatial arrangement within the material. ...
New magnet design for fast-field-cycling nuclear magnetic resonance
(Institute of Electrical and Electronics Engineers, 2013-04)
A new magnet design for fast-field-cycling nuclear magnetic resonance is described. A topic of interest is the compensation of the magnetic field homogeneity during the generation of the pulsed magnetic field. In contrast ...
Aggregation dynamics and magnetic properties of magnetic micrometer-sized particles dispersed in a fluid under the action of rotating magnetic fields
(Elsevier Science, 2015-02)
We present a dynamic study of soft magnetic, commercial Fe and Ni micrometer-sized particles dispersed in oleic acid and subjected to a variable (rotating) magnetic field in the horizontal plane. A very complex structure ...
Reversible and irreversible magnetization components behavior in Ni nanowires
(ELSEVIER SCIENCE BV, 2008)
Polycrystalline Ni nanowires were electrodeposited in nanoporous anodized alumina membranes with mean diameter of approximately 42 nm. Their magnetic properties were studied at 300 K, by measurements of recoil curves from ...
Modelos não lineares de materiais magnéticos para dispositivos elétromagnéticos
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de ElétricaEngenharia ElétricaUTFPR, 2016-11-21)
Cores made with magnetic materials are broadly use in several areas of application Electrical Engineering, such as electrical machines and power electronics. Analyzing systems containing these magnetic cores is complex due ...
Obtaining magnetic and electric information on organic systems using electron spin resonance
(2009-07-01)
A very rich diversity of magnetic ordering can be found in organic systems, and in many of these systems an electron spin resonance (ESR) line can be observed even at room temperature. This fact allows a great deal of ...
Desenvolvimento de Sistemas Microparticulados Superparamagnéticos Gastro-resistentes para Diagnóstico e Terapêutica
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Ciências da SaúdeCiências da Saúde, 2008-12-16)
This work aimed to develop a suitable magnetic system for administration by the oral route. In addition to that, it was intended to review the current uses of magnetic systems and the safety related to magnetic field ...
Implementation and Control of a Magnetic Levitation System
(Institute of Electrical and Electronics Engineers, 2016-06)
A magnetic levitation control system is developed in this work. The non-linear system model is linearized around the operating point. Two control loops, an inner current loop and an outer position loop are designed using ...