scholarly journals Microwave Characterization of Metal-Decorated Carbon Nanopowders Using a Single Transmission Line

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Francisco Mederos-Henry ◽  
Sophie Hermans ◽  
Isabelle Huynen
Keyword(s):  
Magnetic Field ◽  
Dielectric Constant ◽  
Transmission Line ◽  
Dc Magnetic Field ◽  
Microwave Characterization ◽  
Novel Approach ◽  
Measurement Results ◽  
Complex Magnetic Permeability

This paper presents a novel approach for the characterization of microwave properties of carbon-based nanopowders, decorated or not with magnetic nanoparticles. Their microwave parameters, dielectric constant, electrical conductivity, and complex magnetic permeability are extracted from measurements performed using a single transmission line acting as a test cell. Two geometries of transmission line were tested, and successful results were obtained with each one of them. The measurement results are assessed by a phenomenological model enabling to fit the measurement of the dielectric constant and conductivity, providing an insight on the compacity quality of the powder sample. Also, the extraction of the permeability is validated by the detection of a ferromagnetic resonance showing a linear dependence on external DC magnetic field.

scholarly journals Magnetoelectric, magnetodielectric and magneto-impedance couplings in Bi1−xNdxFe0.99Co0.01O3 compounds

2021 ◽  
Vol 10 (14) ◽  
pp. e470101422189
Author(s):  
Anuar José Mincache ◽  
Odair Gonçalves de Oliveira ◽  
Lilian Felipe da Silva Tupan ◽  
Daniel Matos Silva ◽  
Ivair Aparecido dos Santos ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electrical Impedance ◽  
Structural Refinement ◽  
Relative Variation ◽  
Dc Magnetic Field ◽  
Magnetoelectric Coefficient ◽  
Impedance Characterization ◽  
The Magnetic Field ◽  
Rhombohedral Symmetry

In this work Bi1−xNdxFe0.99Co0.01O3 ceramics compositions were synthesized for x = 0.05, 0.20 and, y = 0.01. Structural refinement results show that most of the samples crystallized in a rhombohedral symmetry with R3c. Measurements magnetoelectric coefficient, show that the magnetoelectric coefficients are of second order. The electrical impedance characterization of in function external magnetic fields, has a relative variation of the real dielectric response, the loss tangent and the electrical impedance. The systems, as the DC magnetic field strength increased a gain in both the values of the dielectric constant variation, as well as the variation of the electrical impedance. In other words, the greater the intensity of the magnetic field, the greater your response. There were also significant variations with of the magnetic field AC.  

Nuclear Fuel Assemblies and Fuel Debris Monitor for Characterization of Fuel Assemblies for Final Storage

2013 ◽  
Author(s):  
M. Sokcic-Kostic ◽  
F. Langer ◽  
R. Schultheis ◽  
Ch. Klein
Keyword(s):  
Isotopic Composition ◽  
Nuclear Fuel ◽  
Fissile Material ◽  
Safe Handling ◽  
Measurement Results ◽  
Fuel Assemblies ◽  
And Storage

NUKEM monitor FAMOS is designed to measure the burn up of fuel assemblies (FA’s) and allows the calculation of the content of fissile material and other actinides. The knowledge of the isotopic composition and activities of FA’s is required for a safe handling and storage of the elements. The monitor analyses the measurement results on the basis of burn up calculations which improve the quality of the results, with respect to previous systems, which did not use those.

Electrical and Dielectric properties of Bi6Mn2Ti3O18

2002 ◽  
Vol 755 ◽  
Author(s):  
S.V Suryanarayana ◽  
Suresh M.B ◽  
Srinivas K ◽  
Venkata Ramana E ◽  
Swaminathan G
Keyword(s):  
Magnetic Field ◽  
Dielectric Constant ◽  
Microwave Sintering ◽  
Physical Property ◽  
Pyroelectric Coefficient ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Electrical And Dielectric Properties ◽  
Magnetic Ion

ABSTRACTBismuth layer structured ferroelectrics show interesting physical property variations as a function of external parameters viz., temperature, frequency and magnetic field. In some of these materials, when a magnetic ion is incorporated in the lattice, they show simultaneous ferroelectricity and magnetism, thus exhibiting magnetoelectric output under the influence of an external magnetic field. This paper reports the synthesis and characterization of Bi6Mn2Ti3O18(BMT) which is isomorphous with Bi6Fe2Ti3O18(BFT). The material was prepared both by solid state and microwave sintering routes. The characterization includes X-ray, SEM, conductivity, dielectric constant and pyroelectric coefficient. The results are compared with Fe containing analogue.

Qualification of YBCO Rings and 100% YBCO Wire Loops with the Transformation of the DC Magnetic Field

2010 ◽  
Vol 670 ◽  
pp. 11-20 ◽  
Author(s):  
Janos Kósa
Keyword(s):  
Magnetic Field ◽  
New Method ◽  
Dc Magnetic Field

In this work we present a solution for testing the quality of YBCO rings made from bulk and 100% YBCO wire loops. We used the transformation of the DC magnetic field [1]. Nowadays there are more and more solutions for checking the quality [2]. In this article we show a new method for testing applying the transformation of the DC magnetic field between two independent iron cores inductively.

In situ microwave characterization of microwire composites with external magnetic field

2012 ◽  
Vol 100 (19) ◽  
pp. 192903 ◽  
Author(s):  
F. X. Qin ◽  
C. Brosseau ◽  
H. X. Peng ◽  
H. Wang ◽  
J. Sun
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Microwave Characterization
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