RECONSTRUCTION OF MAGNETIC RECORDING SPATIAL PATTERN ON THE TAPE MEDIA BY REFLECTION ELECTRON-BEAM TOMOGRAPHY

An investigation of magnetic recording spatial pattern on recorded/era sed tape is given by using our reflection electron beam tomography [1] . In our method, the electron beams are injected to the tape surface a nd the positions of the reflected electron beams are measured by a two -dimensional position sensitive detector (PSD), The three-dimensional magnetic stray fields at a distance of 0.1 mu m from the tape surfaces are reconstructed using an algebraic reconstruction technique (ART) a lgorithm from the measured deflection vectors of the reflection electr on beams. From the experimental results, we show the capability of our method for measuring three-dimensional magnetic stray fields just bey ond the surfaces of magnetic materials and the possibility of our meth od for revealing magnetization structures an magnetic tape.