The Commissioning Of A Three Dimensional Depolarized Neutron Beamline For Studying The Magnetic Correlation Length Of A Magnetic Material At Tsing Hua Open-Pool Reactor

2010 ◽  
Author(s):  
Hui-Chia Su ◽  
Chih-Hao Lee ◽  
Hsin-Ho Chang ◽  
Yu-Han Wu ◽  
Chih-Wei Hu ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Correlation Length ◽  
Three Dimensional ◽  
Magnetic Correlation

EVAPORATION OF A FLUID IN CAPILLARY POROUS MEDIA USING A 3D CORRELATED NETWORK MODEL

2006 ◽  
Vol 17 (12) ◽  
pp. 1763-1776 ◽  
Author(s):  
JÚLIO CÉSAR C B R MOREIRA ◽  
KRISHNASWAMY RAJAGOPAL
Keyword(s):  
Porous Medium ◽  
Porous Media ◽  
Network Model ◽  
Correlation Length ◽  
Phase Distribution ◽  
Three Dimensional ◽  
Direct Consequence ◽  
Size Distributions ◽  
Evaporation Process ◽  
Pore Size Distributions

We present the results from simulation studies of evaporation of a single fluid in a capillary porous medium. Employing a three-dimensional site-bond correlated network model to represent a porous medium, namely Clashac sandstone, we analyze different aspects of the phase distribution by evaporation of a single fluid in the porous medium. As a direct consequence of the porous medium utilized, we analyze the influence of a strongly disordered porous media with a broad range of pore and throat size distributions in the evaporation process. Experimental data togheter with throat and pore size distributions were used to build and match the network model, allowing us to determine the porosimetric curve for the Clashac sandstone for different degrees of correlation. Also, the correlation length was obtained from the percolation theory. In our case study the evaporation process modeled was insensitive to the different degrees of correlation that might occur between pores and throats. In addition, it was observed that the evaporation pattern was the same for all analyzed networks above the correlation length.

scholarly journals Correlation length exponent in the three-dimensional fuse network

2004 ◽  
Vol 70 (3) ◽  
Author(s):  
Thomas Ramstad ◽  
Jan Ø. H. Bakke ◽  
Johannes Bjelland ◽  
Torunn Stranden ◽  
Alex Hansen
Keyword(s):  
Correlation Length ◽  
Three Dimensional

Magnetic Nanoparticle Aggregation States in Ag100-xFex Cosputtered Granular Films Investigated by Magnetic and Magnetotransport Measurements

2005 ◽  
Vol 877 ◽  
Author(s):  
Paolo Allia ◽  
Federica Celegato ◽  
Marco Coisson ◽  
Paola Tiberto ◽  
Franco Vinai ◽  
...  
Keyword(s):  
Free Path ◽  
Temperature Interval ◽  
Correlation Length ◽  
Magnetic Nanoparticle ◽  
Magnetic Moments ◽  
Mean Free Path ◽  
Nanoparticle Aggregation ◽  
Competing Interactions ◽  
Granular Films ◽  
Magnetic Correlation

AbstractMagnetoresistance and.magnetization measurements have been performed on nanogranular, cosputtered Ag100-xFex films (x= 10 to 30) in the 4 K – 300 K temperature interval. The analysis reveals that the films with x ≤ 14 are interacting superparamagnets, characterized by a magnetic correlation length of the order of the electronic mean free path λ. Films with x ≥ 26 behave as concentrated magnets with strong competing interactions among magnetic moments (frustrated ferromagnets) and magnetic correlation length much larger than λ.

Spray-Formed Hybrid-Field Electric Motor

2016 ◽  
Author(s):  
Martin Hosek ◽  
Jayaraman Krishnasamy ◽  
Sripati Sah ◽  
Taylor Bashaw
Keyword(s):  
Magnetic Material ◽  
Energy Efficiency ◽  
State Of The Art ◽  
Three Dimensional ◽  
Spray Forming ◽  
Electric Motors ◽  
Soft Magnetic ◽  
Axial Field ◽  
New Class ◽  
Higher Power

A new class of electric motors with hybrid-field topology is introduced. Departing from conventional radial- or axial-field designs, the motors feature three-dimensional magnetic flux paths, which are enabled by an advanced isotropic soft magnetic material produced by a unique additive-manufacturing process based on spray forming. The motors provide considerably higher power output (40% higher power density) and improved energy efficiency (up to 15% lower losses) compared to the state of the art. A prototype spray-formed hybrid-field motor has been designed and constructed, and the size, power and efficiency benefits have been demonstrated.

Neutron depolarization study on the magnetic correlation length of nickel ferrite with different packing densities

2009 ◽  
Vol 404 (17) ◽  
pp. 2565-2567 ◽  
Author(s):  
Chih-Hao Lee ◽  
Hsin-Ho Chang ◽  
Hui-Chia Su ◽  
Yu-Han Wu ◽  
Chih-Wei Hu ◽  
...  
Keyword(s):  
Correlation Length ◽  
Nickel Ferrite ◽  
Magnetic Correlation ◽  
Neutron Depolarization ◽  
Packing Densities
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