Role of ferromagnetic metal velvet and DC magnetic field on the explosion of a C3H8/air mixture-effect on reaction mechanism

Energy ◽  
2022 ◽  
Vol 239 ◽  
pp. 122218
Author(s):  
Shangyong Zhou ◽  
Jiancun Gao ◽  
Zhenmin Luo ◽  
Shoutao Hu ◽  
Le Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Reaction Mechanism ◽  
Ferromagnetic Metal ◽  
Mixture Effect ◽  
Dc Magnetic Field

Room-temperature magnetoelectric coupling, dielectric and impedance studies of 0.5Zn0.3Ni0.7Fe2O4–0.5HoMnO3 nanocomposite

2018 ◽  
Vol 32 (19) ◽  
pp. 1840060 ◽  
Author(s):  
Rajesh Debnath ◽  
S. K. Mandal ◽  
A. Nath ◽  
P. Dey
Keyword(s):  
Magnetic Field ◽  
Dielectric Constant ◽  
Grain Boundaries ◽  
Applied Magnetic Field ◽  
Room Temperature ◽  
Transverse Direction ◽  
Dominant Role ◽  
Dc Magnetic Field ◽  
Nyquist Plots

We have investigated strain mediated magnetoelectric (ME) coupling and impedance properties in 0.5Zn[Formula: see text]Ni[Formula: see text]Fe2O4–0.5HoMnO3 nanocomposites at room-temperature. The ME voltage is measured in both longitudinal and transverse direction at a frequency of 173 Hz. The impedance, real and imaginary parts of impedance and dielectric constant have been carried out in presence of DC magnetic field. With the application of magnetic field, slight decrease in dielectric constant has been observed. The impedance, real and imaginary parts of impedance are found to increase with the increase in the applied magnetic field. Nyquist plots have been fitted using three parallel combinations of resistances–capacitance circuits. Fitted parameters show the dominant role of grain boundaries, grains and interface of two types of grains of the sample.

Effect of Magnetic Fields on the Resistance and Microstructure of Al-Cu Alloy during Solidification Processing

2011 ◽  
Vol 287-290 ◽  
pp. 2916-2920
Author(s):  
Chun Yan Ban ◽  
Peng Qian ◽  
Xu Zhang ◽  
Qi Xian Ba ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Turning Points ◽  
Probe Method ◽  
Solidification Processing ◽  
Ac Magnetic Field ◽  
Dc Magnetic Field ◽  
Cu Alloy ◽  
The Difference ◽  
Good Agreement

The resistance of Al-21%Cu alloy under no magnetic field, DC magnetic field and AC magnetic field from liquid to solid was measured by a four-probe method. The difference of resistance versus temperature curves (R-T curves) was analyzed. It is found that the R-T curves of Al-21%Cu alloy are monotone decreasing and have two obvious turning points. Under DC magnetic field, the liquidus and solidus temperatures of the alloy both decrease, while under AC magnetic field, the liquidus and solidus temperatures both increase. There is a good agreement between the microstructure of quenching sample and R-T curves. The mechanism of the effect of magnetic fields was discussed.

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