Lab Facilities
Our NMR lab, located in the C.B. Green Earth Sciences Building, is equipped with a Varian VXR/Unity spectrometer with a wide-bore 9.4 Tesla magnet (400 MHz H-1 frequency). The spectrometer has full solids capability, with high powered broad-band and decoupler amplifiers, 2 MHz digitizer, and a new Sun host computer. Probes include 4 mm and 5mm Doty high-speed MAS probes, a Varian 7mm MAS probe, a Doty 600 deg C MAS probe, several home-made static, high temperature probes (to about 1500 deg C) and a DAS probe. We also have a complete sample prep lab, including 1600 deg C furnaces and access to cold-seal hydrothermal apparatus in the laboratory of J.G. Liou. Analytical facilities in our department and in the Stanford Laboratory for Advanced Materials include x-ray diffractometers, TEM, SEM, electron microprobe, XPS, etc. World-class capabilities for x-ray absorption spectroscopy and other synchrotron-based techniques are nearby at the Stanford Synchrotron Radiation Laboratory (SSRL)
600 MHz Spectrometer Facility
In collaboration with colleagues in Chemistry and Chemical Engineering, in 1998 we acquired a "wide bore" (89 mm), 600 MHz Varian Unity/INOVA NMR spectrometer that is dedicated to studies of solid and molten materials. This has greatly enhanced our experimental capabilities, especially for a wide range of quadrupolar nuclides and in experiments where sensitivity (high T, surfaces, etc.) is a big problem. This instrument is a fully-equipped three-channel system, with high power capabilities for both high and low frequency ranges, 7.5, 5, and 3.2 mm Chemagnetics double and/or triple resonance MAS probes, and "wideline" static probes, all with variable temperature capability.
800 MHz Spectrometer Facility
Recently, we have begun solid-state NMR studies at "ultra high field," using the Varian 18.8 Tesla spectrometer operated by the Stanford Magnetic Resonance Laboratory, Professor J.D. Puglisi, Director, and newly-developed Chemagnetics solids probes. This facility provides unsurpassed spectral resolution for quadrupolar nuclides in solids, allowing access to previously nearly inaccessible spin systems.