XRD, Si-Powder: Unknown peak? post and replies

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Deleted Post - Nov 5, 2004 at 11:29PM
Justin Avatar
Justin
Chico, CA
32 Posts

Post removed on April 14, 2012 at 7:31 PM EST.


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Re: Grr. - Nov 23 2004 9:38PM
Dave Avatar
Dave
San Marcos, Texas
354 Posts

Hi Justin,

     One possibility is that the peak you are seeing is associated with SiO2, rather than Si.  When Si is exposed to air, it forms what is called a "native oxide" layer.  With a powder sample, this layer would cover every powder particle, and could lead to strong peaks.  Try checking the angles for SiO2 peaks.

Dave


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