Si3N4
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Electronic Structure of Silicon Nitride

Interband transition Strengths (Re[Jcv]) for the two Si3N4 samples and the SiYAlON Bulk Glass Sample. 

. Interband transition strengths and the corresponding London dispersion spectra for Si3N4 and an yttrium aluminum silicon oxynitride glass.  The Hamaker constant for A(Si3N4 | Vac. | Si3N4)  =  192 zJ, while the Hamaker constant of YalSiON glass as the interlayer between the Si3N4 grains, is  (Si3N4|YAlSiON|Si3N4) = 9.3 zJ. 

STEM micrographs of the LaAl - Si3N4  sample showing the four interfaces, a) IF 1 to IF 3 and b) IF 4 where SR-VEEL spectrum images were acquired. 

 

Comment: (c) 2009 Roger H. French , frenchrh@lrsm.upenn.edu
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