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Cation field strength effects on high pressure aluminosilicate glass structure: Multinuclear NMR and La XAFS results
 

Summary: Cation field strength effects on high pressure aluminosilicate glass
structure: Multinuclear NMR and La XAFS results
Kimberly E. Kelsey a,*, Jonathan F. Stebbins a
, David M. Singer a
,
Gordon E. Brown Jr. a,b
, Jed L. Mosenfelder c
, Paul D. Asimow c
a
Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA
b
Stanford Synchrotron Radiation Lightsource, MS 69, SLAC, 2545 Sand Hill Road, Menlo Park, CA 94025, USA
c
Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
Received 18 September 2008; accepted in revised form 30 March 2009; available online 14 April 2009
Abstract
We examined aluminosilicate glasses containing a variety of network modifying to intermediate cations (Li, La, Sc, and
Fe), quenched from melts at 1 atm to 8 GPa, to further investigate the role of cation field strength in Al coordination changes
and densification. 27
Al Nuclear Magnetic Resonance Spectroscopy (NMR) reveals that the mean Al coordination increases

  

Source: Asimow, Paul D. - Division of Geological and Planetary Sciences, California Institute of Technology,

 

Collections: Geosciences