[Ifeffit] Cementite EXAFS - thanks

[Bhoopesh Mishra]

Hi Matt,
        I imagined you might not remember about the data or how was it
prepared, so I decided not to bother you asking about it. But sounds like
you do have an amazing memory.

     Yes, I would be happy to characterize the sample by running both EXAFS
and XRD on it if you still have it. I would of course share the information
with the mailing list, once I characterize it. I will collect the sample
from you sometime soon. Thanks again for offering.


Regards,
Bhoopesh



On Thu, Sep 24, 2009 at 4:35 PM, Matt Newville
<newville at cars.uchicago.edu>wrote:

> Hi Bhoopesh,
>
> It's amazing to me how many people have asked about this data set.
>
> I did not prepare the sample of Fe3C measured for the data in the
> model compound library.   Basically, a user interested in reduced iron
> phases and with good knowledge of carbides showed up at the beamline
> with a vial of black powder marked Fe3C.    We made a powder-on-tape
> sample of this and measured it.  At the time, the user (who knows
> about diamond synthesis and who I trust) said the sample was made by
> another colleague.   Yes, it all sounds "secret formula", and I do not
> know whether it is pure cementite.  If you're interested,  believe I
> still have this sample in my Standards Notebook if you'd like to
> measure XAFS or XRD on it.
>
> --Matt
>
> On Thu, Sep 24, 2009 at 4:08 PM, Bhoopesh Mishra <bhoopeshm at gmail.com>
> wrote:
> > Hi Scott and Mathew,
> >       Thanks for pointing me to Matt Newville's archive. It is a great
> > resource to have and I have used it on several occasions.
> >
> >      However, what I found on that database is "Fe3C". Since there are
> > couple of different local environments for Fe3C, and not all of them are
> > Cementite - I am not sure if that would be a good standard for me.
> > Nevertheless, it served as a good starting point.
> >
> >    It would be great if Andrew can send us his data.
> >
> >
> > Thanks again,
> > Bhoopesh
> >
> >
> >
> > On Thu, Sep 24, 2009 at 11:54 AM, Scott Calvin <SCalvin at slc.edu> wrote:
> >>
> >> Hi Bhoopesh,
> >>
> >> There are files that are identified as cementite in Matt Newville's
> >> archive:
> >>
> >> http://cars9.uchicago.edu/~newville/ModelLib/search.html<http://cars9.uchicago.edu/%7Enewville/ModelLib/search.html>
> >>
> >> If you manage to get any other data, let me know; I've used the
> >> standard at the link above, but I'd like to confirm it.
> >>
> >> --Scott Calvin
> >> Sarah Lawrence College
> >>
> >> On Sep 24, 2009, at 11:45 AM, bhoopeshm wrote:
> >>
> >> > Dear All,
> >> >           I am writing to see if anyone on this mailing list has
> >> > ever measured "Cementite" (Fe3C) EXAFS. It is basically an Iron
> >> > Carbide, nothing exotic at all.
> >> >
> >> >  I would be very grateful to anyone who might want to share an EXAFS
> >> > spectrum of Cementite (Fe3C).
> >> >
> >> >
> >> > Regards,
> >> > Bhoopesh
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> >
> >
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