X-ray photoemission study of CoFeB/MgO thin film bi-layers

J. C. Read, P. G. Mather, R. A. Buhrman

We present results from an X-ray photoemission spectroscopy (XPS) study of CoFeB/MgO bi-layers where we observe process-dependent formation of B, Fe, and Co oxides at the CoFeB/MgO…