Pieces of diamagnetic materials are used for stabilizing the free levitation of permanent magnets in various micro-systems that require high sensitivity to the gravitational field alternation. The stability area of the levitation floater in such configurations is relatively narrow and limits the performance of these devices. For a vertical symmetric levitation configuration, this paper proposes a method of extending the stability interval by using a magnetic field source with a particular optimized geometry, which provides a larger magnetic field curvature at the levitation point.

Keywords: Diamagnetic levitation, Stability area extension.