LEVITATION FORCE BETWEEN A SHORT MAGNETIC BAR AND A SUPERCONDUCTING CYLINDER IN THE MEISSNER STATE

2006 ◽  
Vol 20 (24) ◽  
pp. 1549-1557 ◽  
Author(s):  
M. K. ALQADI ◽  
F. Y. ALZOUBI ◽  
H. M. AL-KHATEEB ◽  
N. Y. AYOUB
Keyword(s):  
Interaction Energy ◽  
Magnetic Dipole ◽  
Levitation Force ◽  
Orientation Angle ◽  
Interaction Model ◽  
Dipole Interaction ◽  
Meissner State ◽  
Analytical Expression ◽  
Superconducting Cylinder ◽  
Physical Dimensions

We have calculated the levitation force and interaction energy between a short magnetic bar and a superconducting cylinder in the Meissner state using the dipole–dipole interaction model. We derived analytical expression of the levitation force acting on the short magnet as a function of the orientation angle of magnetic dipole, and the physical dimensions of the magnet-superconductor system. The effects of the thickness of the superconductor and the length of the magnet on the levitation force were studied.

DIPOLE-DIPOLE INTERACTION IN A SUPERCONDUCTOR

1994 ◽  
Vol 08 (24) ◽  
pp. 1517-1528
Author(s):  
Z.J. YANG
Keyword(s):  
Interaction Energy ◽  
Magnetic Dipole ◽  
Magnetic Induction ◽  
Dipole Interaction ◽  
Magnetic Dipoles ◽  
Magnetic Induction Distribution ◽  
Theory Of Superconductivity ◽  
London Theory

Based on the London theory and the Pippard theory of superconductivity, we have calculated the magnetic induction distribution from a magnetic dipole located in a superconductor. The results have been used to evaluate the interaction energy between two magnetic dipoles located in the superconductor. The relevant applications of these calculations have been discussed briefly.

scholarly journals Concentration-dependent oscillation of specific loss power in magnetic nanofluid hyperthermia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ji-wook Kim ◽  
Jie Wang ◽  
Hyungsub Kim ◽  
Seongtae Bae
Keyword(s):  
Magnetic Dipole ◽  
Critical Role ◽  
Dipole Interaction ◽  
Superparamagnetic Nanoparticles ◽  
Physical Reason ◽  
Strong Concentration ◽  
Magnetic Nanofluid ◽  
Specific Loss ◽  
Specific Loss Power ◽  
Magnetic Nanofluid Hyperthermia

AbstractMagnetic dipole coupling between the colloidal superparamagnetic nanoparticles (SPNPs) depending on the concentration has been paid significant attention due to its critical role in characterizing the Specific Loss Power (SLP) in magnetic nanofluid hyperthermia (MNFH). However, despite immense efforts, the physical mechanism of concentration-dependent SLP change behavior is still poorly understood and some contradictory results have been recently reported. Here, we first report that the SLP of SPNP MNFH agent shows strong concentration-dependent oscillation behavior. According to the experimentally and theoretically analyzed results, the energy competition among the magnetic dipole interaction energy, magnetic potential energy, and exchange energy, was revealed as the main physical reason for the oscillation behavior. Empirically demonstrated new finding and physically established model on the concentration-dependent SLP oscillation behavior is expected to provide biomedically crucial information in determining the critical dose of an agent for clinically safe and highly efficient MNFH in cancer clinics.

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