Rietveld for alloys help

Hi! I want to do rietveld analysis of the alloy Zr 2.5% Nb. Can anybody tell me how to incorporate the phase,occupation etc. in the rietveld analysis for the alloy system. Thanking you. Apu Sarkar Apu Sarkar Research Fellow Variable Energy

Domain size confution

Dear All, Can anybody antbody tell me what do the terms area weighted domain size and volume weighted domain size physically mean. How to understand these two concepts of domain sizes physically. Thanks in advance. Apu Apu Sarkar Research

Re: Domain size confution

Dear Armel, Thank you very much for your reply. But I am not getting the paper "Bertaut F., C.R. Acad Sci. Paris, 228 (1949) 492." which you have referred. Can you please send a copy of the paper. With best regards, Apu ******** Apu Sarka

stucture factor

. Regards, Apu Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA

Re: software for detemining dislocations density

thankful to you if you kindly send the paper to me. Regards, Apu Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA

Re: GSAS size & strain

, Apu sarkar Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA - Original Message - From

GSAS

Hi! Please tell me how to obtain size and strain information from GSAS. Thanks in advance. Regards, Apu Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871

Size and Strain from GSAS

Hi! I am new to GSAS.Now I am to able to refine my experimental data in GSAS. But I am not getting how to get the size-strain information from GSAS. Please give me some hints. Thanking in advance. Apu Apu Sarkar Research Fellow Variable

New to GSAS

. Thanks in advance. Regards, Apu Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA

Crystallite size plot

lite). Can anyone tell me how can I plot this 3D figure using MATLAB or any other software. Thanking in advance. Apu ******** Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA

Dislocation loop and broadening

. Can anybody tell me how can I explain the broadening in terms of dislocation loops (not straight dislocation). Thanks in advance. Regards, Apu Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230

FPA- profile functions

Dear Dr Pamela Whitfield , Thank you very much for your detail replies on this particular topic.Yours replies were quite benificial for me. Please write something about what do (physically) volume weighted and area weighted domain size mean. Thanking you. Regards, Apu

Point defect and broadening

Dear All, Do point defects cause broadening of XRD profile?Can anyone suggest some references on this particular topic. Thanking in advance. Regards, Apu Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91

GSAS - p 63/m m c

i.e. x,y,z as (0, 0, 0) for Zr1 and (0.666, 0.333, 0.5) for ZR2 in GSAS. I think I am doing wrong because it is giving very bad result.. Please suggest what should I give as the atom coordinates. Thanking you all. Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow

Re: GSAS - p 63/m m c

, 1/2). What is the general rule for supplying the atoms coordinate in GSAS? Is there any literature(help) on this topic? Thanking you. With best regards, Apu  /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33

space group + symmetry positions

S. I will be grateful, if anybody help me in this regard. Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

space group + symmetry positions

Dear Dr. Zhang and Dr. Marc, Thank you for your reply. Now just for my interest can you tell me for a hexagonal crystal structure with two atoms per unit cell and space group P 6 3/m m c ( space group number 194) what would be atoms position to be inserted in GSAS. With best regards, Apu

instrumental correction in xrd analysis

instrumental error removed(deconvoluted) diffraction data. Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

instrumental correction

tware which will use these informations of the instrument and deconvolute the instrumental profile from the xrd pattern and give me the error free diffraction profile. I am also interested to obtain the instrumental corrected intetnsity data. Thanki

Domain Size confusion

" means a subgarin within a grain (created by dislocation structure) then is it expected to estimate the "Domain size" in any sorts of samples. Because when I perform Rietveld analysis on any sample it gives one domain size value!! Please reply. Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/

Re: Domain Size confusion

Dear Sir Armel, Thank you for your comprehensive mail. Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA

Unexpected honour

Dear Respected Sir, Have I done anything wrong! I am really scared, because I am not that much sound in english. I wrote like that because I respect Prof. Armel very much. Please forgive me if there were some thing wrong or funny. With best regards, Apu

3-D Domain Size

-Dimensional sketch of the domain? If yes please tell me how to do that. It will be helpful for me if any one supplies me an example. With best regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337

Size Strain In GSAS

. P.S. I am using the EXPGUI. Thanks in advace. Regards, Apu/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 INDIA /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

Re: Size Strain In GSAS

all domain size effect. I that case how will I obatin a good fit with GSAS. Thanking you. Best Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6

Rietveld refinement for Alloys

information for the Matrix (main element) I donot get good result. Please suggest what should I do to get better results. With best regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Fellow Variable Energy Cyclotron Centre Kolkata 700 064 phone: 91-33-2337-1230 (extn

RE: Size Strain In GSAS

Dear Matteo, Thanks for the problem. I have used pseudo voigt function to fit the peaks and finally used the program BREADTH and obtained Dv=31 A, Da=18 A. Please send me your simulation parameters, plots/calculations. Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar

Change format

P.S. Attachment is not allowed in this list. I am using powder to convert files and using well in GSAS. Use Powder and click open file - chose the option with your extention. Then save the file as *.gsa. It should work. Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research

Fourier Map n GSAS

Dear All, I am using GSAS to caculate the fourier map. But I am not getting how should I define a plnae on which I wish to see the electron density map. Suppose I want to see the FOBS on the plane (101) or (002). Please tell me what are the steps. Regards, Apu

Re: Caltech survey

I guess that is why it is called FULLPROF and not ASSISTANTPROF or ASSOCIATEPROF. Nice Shot!!!   Apu- Original Message - From: simon billinge <[EMAIL PROTECTED]> Date: Friday, July 1, 2005 6:48 pm Subject: Re: Caltech survey > > > Interesting enough is the variation o

Diffractometer problem

problem!! Regards, Apu

Re: Diffractometer problem

Dear Will, This is the figure:   Regards, Apu/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Scholar Variable Energy Cyclotron Centre 1/AF Bidhan Nagar Kolkata 700 064 INDIA phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871

Re: Diffractometer problem

The sample is stainless steel and the radiation is Mo. The D8 is in Bragg-Brentano geometry. Regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Scholar Variable Energy Cyclotron Centre 1/AF Bidhan Nagar Kolkata 700 064 INDIA phone: 91-33-2337-1230 (extn. 3190) Fax

Atomic scattering factor for Carbon

data of carbon upto high angle. Thanking you. With best regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Apu Sarkar Research Scholar Variable Energy Cyclotron Centre 1/AF Bidhan Nagar Kolkata 700 064 INDIA phone: 91-33-2337-1230 (extn. 3190) Fax: 91-33-2334-6871 /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

Stephens Model:GSAS

model)to draw the 3D-anisotropic strain field within the sample, does it carry any physical meaning! Thanking you. With best regards, Apu

GSAS: Stephens Model

model)to draw the 3D-anisotropic strain field within the sample, does it carry any physical meaning! Thanking you. With best regards, Apu

Re: GSAS: Stephens Model

field within the sample? Thanking you. With best regards, Apu - Original Message - From: Joerg Bergmann <[EMAIL PROTECTED]> Date: Friday, October 27, 2006 7:10 pm Subject: Re: GSAS: Stephens Model > Dear Apu, > > maybe, there is some physical meaning. But, in gene

Peak shift

misalignment or due to sample positioning error (since samples are solid sample...the height levels are not exactly identical) Looking forward for your commments Regards, Apu

Phase volume fraction

Hi, Can any one tell me what is the minimum phase volume fraction that can be detected by a laboratory X-ray diffractometer. In there any reference for this. I am using the new Empyrean from PANalytical. Thanks Apu Department of Nuclear Engineering NC State University Raleigh, USA

Re: Phase volume fraction

understand that is not exactly the dissolution temperature. There is a limit of XRD to detect the phase. Thanks Apu Department of Nuclear Engineering NC State University Raleigh, USA On 5/1/14, Leoni, Matteo wrote: > I guess you are talking about detection limit only, not quantification >

Re: Phase volume fraction

Apu On 5/3/14, Tony Wang wrote: > Hi Apu, > > > > As you are running in situ scanning you probably cannot scan the sample for > long time. > > If you are only care about the accurate phase transforming temperature, you > can localize the scan range to the major peak f

Re: Phase volume fraction

Hi Matteo, Thanks for the wonderful suggestion. Regards Apu On 5/5/14, Leoni, Matteo wrote: > .. perhaps I am not getting the point or it's just too stupid to be > effective... but can't you just get the integrated intensity of the peak > versus temperature and extrapolate d