title: Nondestructive high-resolution solid-state NMR of rotating thin films at the magic-angle.
abstract: We present a new approach to nondestructive magic-angle spinning (MAS) nuclear magnetic resonance (NMR) for thin films. In this scheme, the sample put on the top of a rotor is spun using the conventional MAS system, and the NMR signals are detected with an additional coil. Stable spinning of disk-shaped samples with diameters of 7 mm and 12 mm at 14.2 and 7 kHz are feasible. We present 7Li MAS NMR experiments of a thin-film sample of LiCoO2 with a thickness of 200 nm. Taking advantage of the nondestructive feature of the experiment, we also demonstrate ex situ experiments, by tracing conformation change upon annealing for various durations. This approach opens the door for in situ MAS NMR of thin-film devices as well.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan. minukai@icems.kyoto-u.ac.jp
authors.forename: Munehiro
authors.initials: M
authors.lastname: Inukai
authors.forename: Yasuto
authors.initials: Y
authors.lastname: Noda
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Takeda
mesh_terms: D004566:Electrodes; D008094:Lithium / Q000737:chemistry; D016651:Lithium Carbonate / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods*
chemical_list: D016651:Lithium Carbonate; D008094:Lithium