Recent Advances in Solid-State 25Mg NMR Spectroscopy

In spite of the relatively unfavourable characteristics of the Mg-25 nuclide for NMR experiments-such as low natural abundance, small magnetogyric ratio and sizeable quadrupolar broadening-there is increasing evidence that solid-state Mg-25 NMR is a powerful tool for studies involving many different materials. Much of the recent boost in this field has been driven by instrumental improvements, such as the availability of high magnetic fields and fast-spinning speeds, as well as by the use of signal-enhancement methods developed in the past decade for half-integer spin quadrupolar nuclei. The most relevant advances in solid-state Mg-25 NMR spectroscopy are reviewed here, including a detailed account of the use of signal-enhancement methods and of the more recent applications of first-principles calculations of Mg-25 NMR parameters. Examples of the application of Mg-25 solid-state NMR are given for different classes of materials, including organic compounds, oxide-based materials, glasses, alloys and intermetallic compounds.