Abstract

The temperature dependence of the coercive field (H/sub c/) and the thermal fluctuation field (H/sub f/) of Nd-Fe-B sintered magnets was measured from 100 K to 500 K. It was found that a linear relationship exists between l/sub g/H/sub f/ and l/sub g/H/sub c/ in this temperature range. The relationship between l/sub g/H/sub c/ and l/sub g/H/sub f/ was deduced from Gaunt's localized weak pinning model. Values of l/sub g/H/sub c/ calculated from the derived relationship are in very good agreement with experimental values.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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