Alan:
I feel compelled to make several points in connection with the thread
concerning database/software costs. As you suggested, it is important to
place costs in an accurate context.
A new customer license for the PDF-2 is $6,100. But this is only for the
first year. ICDD produces updates e
Hi,
I think the difference between the lattice
parameter of single crystal and powder is
coming from the misoriented surface of the
crystal.
To detect this rotate the crystal in its own plane
360 degrees with a convenable step and plot the
lattice parameter "a" versus the number of steps,
you'l
I recently encountered this with Y2O3. The literature results from single
crystal measurements show a lattice parameter of 10.604 Å while powder
diffraction results show 10.607 Å. I am using Y2O3 to calibrate the
twotheta response of my cps-120.
Originally I thought I should use 10.604 Å to cal
Alan Hewat wrote :
>I agree that the PDF is too expensive (even tho' ICDD point out that it
>is only 6 cents for each of the 115,000 patterns :-) and for that reason
>our lab. can't afford it either - but that's our choice too.
Not a lot of compounds are synthesized at ILL, which explains that
Ron,
I suspect you are criticising the wrong people when you complain about
the high cost of Oxford Cryosystems Search-Match CSM software.
CSM apparently uses the ICDD powder diffraction file PDF, the product
of another (American) organisation, which is indeed quite expensive.
(~$6000 I b
Patrick,
Please look up the following references:
J. Appl. Phys. 56(2), 15 july 1984, pp 314-320.
Do note the differences that occur between cell parameters
determined form single crystal and powder diffraction data.
Or does anyone know of a more recent paper?
regards
Jaap Vente
Cinvestav-IP
Hello,
Does someone has got accurate measurement of lattice parameter of Si in the
range 290°K-1300°K?
Thanks by advance.
Hello everybody,
In view of the recent discussion of software price I would like to add
another example. Below is the exchange I had with Oxford over the price of
a new search match system (as well as lots of other functions) The price is
4500 pounds with no academic( or non-commercial) price.
I b
