A process sequence is provided to provide an ultra-smooth (0.2 nm or less) bottom electrode surface for depositing magnetic tunnel junctions thereon. In one embodiment, the sequence includes forming a bottom electrode pad through bulk layer deposition followed by patterning and etching. Oxide is then deposited over the formed bottom electrode pads and polished back to expose the bottom electrode pads. A bottom electrode buff layer is then deposited thereover following a pre-clean operation. The bottom electrode buff layer is then exposed to a chemical mechanical polishing process to improve surface roughness. An magnetic tunnel junction deposition is then performed over the bottom electrode buff layer.