Fig. 2

Specimen preparation and APT ToF mass spectra of MeCpPtMe₃ prepared under ambient and cryogenic conditions. a Mass spectrum of MeCpPtMe₃ decomposed at room temperature into Pt/a-C via IBAD and collected via (a) APT laser-pulsed mode and b APT voltage-pulsed mode. c Mass spectrum of MeCpPtMe₃ decomposed at room temperature into Pt/a-C via EBAD and collected via APT-voltage-pulsed mode. d Mass spectrum collected via APT voltage-pulsed mode of MeCpPtMe₃ deposited onto a Si micropost array substrate cryogenically cooled to 113 K in the FIB/SEM and environmentally transferred under high vacuum into the atom probe. e–h Zoomed in region of mass spectra showing individual isotope mass peaks of Pt