作者: Yasuo Shimizu , Yoko Kawamura , Masashi Uematsu , Kohei M Itoh , Mitsuhiro Tomita
DOI: 10.1063/1.3236673
关键词:
摘要: Laser-assisted atom probe microscopy of 2 nm period Si28∕Si30 isotope superlattices (SLs) is reported. Three-dimensional distributions Si28 and Si30 stable isotopes are obtained with sub-nanometer spatial resolution. The depth resolution the present analysis much higher than that secondary ion mass spectrometry (SIMS) even when SIMS performed a great care to reduce artifact due atomic mixing. Outlook Si SLs as ideal scales for three-dimensional position standards discussed.