Field mapping with the magnetic resonance force microscope

We have developed magnetic resonance force microscopy for quantitative meas urements of magnetic fields. A microscopic particle attached near the end o f a microcantilever serves as the field sensing probe. We have demonstrated two-dimensional field mapping with a lateral resolution of 3.2 mu m and a field resolution of 0.19 mT (1.9 G). The instrument holds considerable prom ise for field mapping with spatial resolution better than 0.1 mu m at room temperature. Applications include field mapping of magnetic recording heads . (C) 1999 American Institute of Physics. [S0021-8979(99)00513-7].