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Magnetic Images And A Novel Stable Ferro-Magnetic Suspension
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In 2010 the Physics Nobel prize was awarded to A.K. Geim and K. Novoselov, famous for their spectacular demonstrations of diamagnetically levitated living animals. Recently, Berry, Geim and collaborators [Eur J Phy, 18, 307 (1997); J. of Appld. Phys 87, 6200 (2000)] showed that stability of a diamagnetic PM, or a magnetized PM . The proof masses in this work can be even be unmagnetized still we show that with an appropriate diamagnetic stabilizer equilibrium is achieved along all three Cartesian axes. The forces follow the Bio-Savart field due to localized current loops but at short distances are well represented by algebraic power laws. Experimental procedures for direct measurements of the magnetic image forces and physical modeling will be discussed.
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