[Wien] Heusler Alloy Fe2CrSn_Atomic Position

2009-09-08 Thread alpa dashora
Dear Wien2k Users,

I am trying to calculate the electronic structure of Heusler alloy Fe2CrSn
using Wien2k. It is supposed to exist in L2/1 structure (space group 225)
with following positions:
Fe: 0.25 0.25 0.25
Fe: 0.75 0.75 0.75
Cr:  0.5   0.5   0.5
Sn: 0.0  0.0   0.0

When the positions are changed as follows:
Fe: 0.0  0.0   0.0
Fe:  0.5   0.5   0.5
Cr: 0.25 0.25 0.25 Sn: 0.75 0.75 0.75

then the Wien shows space group 216 and magnetic properties are totally
changed.

Is it right and what is the excact structure for Fe2CrSn?

Please help me.

Thanks in advance,




-- 
Alpa Dashora
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[Wien] Error in mixer file

2009-09-08 Thread Debojyoti Mukherjee
Dear Laurence Marks,

  Thank you very much for your reply. today I found the same problem
with a simple calculation at the time of initialisation. At third iteration,
the program stopped with the same error. I didn't change and save any file
during this run. I am using WIEN2k_09.1 (Release 5/2/2009) version. By the
way, I did not understand what you want to mean by telling "ensure that you
are using the latest mixer (update if needed)".

Thanking  you again.

Debojyoti Mukherjee




On Fri, Sep 4, 2009 at 5:34 PM, Laurence Marks wrote:

> This error is due to a different length of your clmsum file for the
> older iterations compared to the current one. This can occur easily if
> you have changed something during a run (e.g. the number of LMs or
> PW's) although the mixer tries to catch that.
>
> Remove the old broyden files (rm *broyd* ) and continue. If you are
> still getting the error, ensure that you are using the latest mixer
> (update if needed). If these two do not work post again to the mailing
> list.
>
> 2009/9/4 Debojyoti Mukherjee :
> > Dear Wien users,
> >I am getting an error when carrying out volume
> > optimization of hexagonal structure containing three atoms.
> >
> > "mixer.error" file contains the line
> >
> >  Error in MIXER
> >
> > "case.dayfile" contains
> >
> > error: command   /home/debojyoti/wien2k/mixer mixer.def   failed
> >
> > and the nohup.out file has the message
> >
> > in cycle 9ETEST: .00306600   CTEST: .0183225
> >  974 hup: Command not found.
> >  975 Invalid null command.
> >  976  LAPW0 END
> >  977 Invalid null command.
> >  978  LAPW1 END
> >  979 Invalid null command.
> >  980  LAPW2 END
> >  981 Invalid null command.
> >  982  CORE  END
> >  983 Invalid null command.
> >  984 forrtl: severe (67): input statement requires too much data, unit
> 32,
> > file /home/debojyoti/tahex/tahex.b royd2007
> >  985 Image  PCRoutineLineSource
> >  986 mixer  080E95DD  Unknown   Unknown  Unknown
> >  987 mixer  080E83D5  Unknown   Unknown  Unknown
> >  988 mixer  080B7068  Unknown   Unknown  Unknown
> >  989 mixer  08080BC9  Unknown   Unknown  Unknown
> >  990 mixer  0808055B  Unknown   Unknown  Unknown
> >  991 mixer  0809AAFF  Unknown   Unknown  Unknown
> >  992 mixer  080992C0  Unknown   Unknown  Unknown
> >  993 mixer  0806A256  Unknown   Unknown  Unknown
> >  994 mixer  0805BEE4  Unknown   Unknown  Unknown
> >  995 mixer  08049CF1  Unknown   Unknown  Unknown
> >  996 libc.so.6  4006D775  Unknown   Unknown  Unknown
> >  997 mixer  08049C01  Unknown   Unknown  Unknown
> >  998
> >  999 >   stop error
> >
> > It seems to be the problem of data reading error. But, can anyone please
> > tell me why this problem is coming and how solve this?
> >
> >
> > Debojyoti Mukherjee
> >
> >
> > ___
> > Wien mailing list
> > Wien at zeus.theochem.tuwien.ac.at
> > http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
> >
> >
>
>
>
> --
> Laurence Marks
> Department of Materials Science and Engineering
> MSE Rm 2036 Cook Hall
> 2220 N Campus Drive
> Northwestern University
> Evanston, IL 60208, USA
> Tel: (847) 491-3996 Fax: (847) 491-7820
> email: L-marks at northwestern dot edu
> Web: www.numis.northwestern.edu
> Chair, Commission on Electron Crystallography of IUCR
> www.numis.northwestern.edu/
> Electron crystallography is the branch of science that uses electron
> scattering to study the structure of matter.
> ___
> Wien mailing list
> Wien at zeus.theochem.tuwien.ac.at
> http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
>
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[Wien] Error in mixer file

2009-09-08 Thread Laurence Marks
Please download the very latest version from the web page and compile
it -- to ensure that this is not an issue (some updates go directly
onto the web page prior to a new release). This will remove
ambiguities so we know exactly what you are using. If there is still a
problem and you cannot cure it by deleting the *broyd* files and
continuing please let me know (perhaps use my direct email).

2009/9/8 Debojyoti Mukherjee :
> Dear Laurence Marks,
>
> ? Thank you very much for your reply. today I found the same problem
> with a simple calculation at the time of initialisation. At third iteration,
> the program stopped with the same error. I didn't change and save any file
> during this run. I am using WIEN2k_09.1 (Release 5/2/2009) version. By the
> way, I did not understand what you want to mean by telling "ensure that you
> are using the latest mixer (update if needed)".
>
> Thanking? you again.
>
> Debojyoti Mukherjee
>
>
>
>
> On Fri, Sep 4, 2009 at 5:34 PM, Laurence Marks 
> wrote:
>>
>> This error is due to a different length of your clmsum file for the
>> older iterations compared to the current one. This can occur easily if
>> you have changed something during a run (e.g. the number of LMs or
>> PW's) although the mixer tries to catch that.
>>
>> Remove the old broyden files (rm *broyd* ) and continue. If you are
>> still getting the error, ensure that you are using the latest mixer
>> (update if needed). If these two do not work post again to the mailing
>> list.
>>
>> 2009/9/4 Debojyoti Mukherjee :
>> > Dear Wien users,
>> > ?? I am getting an error when carrying out volume
>> > optimization of hexagonal structure containing three atoms.
>> >
>> > "mixer.error" file contains the line
>> >
>> > ?Error in MIXER
>> >
>> > "case.dayfile" contains
>> >
>> > error: command?? /home/debojyoti/wien2k/mixer mixer.def?? failed
>> >
>> > and the nohup.out file has the message
>> >
>> > in cycle 9??? ETEST: .00306600?? CTEST: .0183225
>> > ?974 hup: Command not found.
>> > ?975 Invalid null command.
>> > ?976? LAPW0 END
>> > ?977 Invalid null command.
>> > ?978? LAPW1 END
>> > ?979 Invalid null command.
>> > ?980? LAPW2 END
>> > ?981 Invalid null command.
>> > ?982? CORE? END
>> > ?983 Invalid null command.
>> > ?984 forrtl: severe (67): input statement requires too much data, unit
>> > 32,
>> > file /home/debojyoti/tahex/tahex.b royd2007
>> > ?985 Image? PC??? Routine??? Line??? Source
>> > ?986 mixer? 080E95DD? Unknown?? Unknown? Unknown
>> > ?987 mixer? 080E83D5? Unknown?? Unknown? Unknown
>> > ?988 mixer? 080B7068? Unknown?? Unknown? Unknown
>> > ?989 mixer? 08080BC9? Unknown?? Unknown? Unknown
>> > ?990 mixer? 0808055B? Unknown?? Unknown? Unknown
>> > ?991 mixer? 0809AAFF? Unknown?? Unknown? Unknown
>> > ?992 mixer? 080992C0? Unknown?? Unknown? Unknown
>> > ?993 mixer? 0806A256? Unknown?? Unknown? Unknown
>> > ?994 mixer? 0805BEE4? Unknown?? Unknown? Unknown
>> > ?995 mixer? 08049CF1? Unknown?? Unknown? Unknown
>> > ?996 libc.so.6? 4006D775? Unknown?? Unknown? Unknown
>> > ?997 mixer? 08049C01? Unknown?? Unknown? Unknown
>> > ?998
>> > ?999 >?? stop error
>> >
>> > It seems to be the problem of data reading error. But, can anyone please
>> > tell me why this problem is coming and how solve this?
>> >
>> >
>> > Debojyoti Mukherjee
>> >
>> >
>> > ___
>> > Wien mailing list
>> > Wien at zeus.theochem.tuwien.ac.at
>> > http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
>> >
>> >
>>
>>
>>
>> --
>> Laurence Marks
>> Department of Materials Science and Engineering
>> MSE Rm 2036 Cook Hall
>> 2220 N Campus Drive
>> Northwestern University
>> Evanston, IL 60208, USA
>> Tel: (847) 491-3996 Fax: (847) 491-7820
>> email: L-marks at northwestern dot edu
>> Web: www.numis.northwestern.edu
>> Chair, Commission on Electron Crystallography of IUCR
>> www.numis.northwestern.edu/
>> Electron crystallography is the branch of science that uses electron
>> scattering to study the structure of matter.
>> ___
>> Wien mailing list
>> Wien at zeus.theochem.tuwien.ac.at
>> http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
>
>
> ___
> Wien mailing list
> Wien at zeus.theochem.tuwien.ac.at
> http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien
>
>



-- 
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2220 N Campus Drive
Northwestern University
Evanston, IL 60208, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
email: L-marks at northwestern dot edu
Web: www.numis.northwestern.edu
Chair, Commission on Electron Crystal

[Wien] Heusler Alloy Fe2CrSn_Atomic Position

2009-09-08 Thread Michael Fischer
Hello,

the position (1/4, 1/4, 1/4) has eightfold symmetry in space group 225, one of 
the equivalent positions being (3/4, 3/4, 3/4).
Thus, Fe should only be specified once - does this solve the problem?

Best regards
Michael
-- 
Neu: GMX Doppel-FLAT mit Internet-Flatrate + Telefon-Flatrate
f?r nur 19,99 Euro/mtl.!* http://portal.gmx.net/de/go/dsl02


[Wien] Heusler Alloy Fe2CrSn_Atomic Position

2009-09-08 Thread Gerhard Fecher
For the 2 structures below, the result should be the same.
as in space group 216 the change of the atoms in positions 4a, 4b  with those 
on 4c,4d
results in the same symmetry (all positions have Td symmetry)
Occupying 4a,4b or 4c,4d (like you gave below) with the same species will 
always result in a higher symmetry (Oh) for the other two positions,
and thus into space group 225.

If the Fe atoms have an antiparallel coupling then (as this is not possible in 
225) the result of 216 will be different,
otherwise it is identical.

If you exchange in a way that you have for example
Fe: 0.25 0.25 0.25
Cr: 0.75 0.75 0.75
Fe:  0.5   0.5   0.5
Sn: 0.0  0.0   0.0
then this is different from the structures you gave,
and indeed, the magnetic behaviour will be different.

The "exact" structure should be the one with lowest total energy, trivially.

Ciao
Gerhard

EVERYTHING IS SYMMETRY IS EVERYTHING


Dr. Gerhard H. Fecher
Institut of Inorganic and Analytical Chemistry
Johannes Gutenberg - University
55099 Mainz

Von: wien-bounces at zeus.theochem.tuwien.ac.at [wien-bounces at 
zeus.theochem.tuwien.ac.at] im Auftrag von alpa dashora [dashoralpa at 
gmail.com]
Gesendet: Dienstag, 8. September 2009 05:49
An: wien-request at zeus.theochem.tuwien.ac.at; Wien at 
zeus.theochem.tuwien.ac.at
Betreff: [Wien] Heusler Alloy Fe2CrSn_Atomic Position

Dear Wien2k Users,

I am trying to calculate the electronic structure of Heusler alloy Fe2CrSn 
using Wien2k. It is supposed to exist in L2/1 structure (space group 225) with 
following positions:
Fe: 0.25 0.25 0.25
Fe: 0.75 0.75 0.75
Cr:  0.5   0.5   0.5
Sn: 0.0  0.0   0.0

When the positions are changed as follows:
Fe: 0.0  0.0   0.0
Fe:  0.5   0.5   0.5
Cr: 0.25 0.25 0.25
Sn: 0.75 0.75 0.75

then the Wien shows space group 216 and magnetic properties are totally changed.

Is it right and what is the excact structure for Fe2CrSn?

Please help me.

Thanks in advance,




--
Alpa Dashora


[Wien] to PBS from w2web

2009-09-08 Thread Jonas Baltrusaitis
Hi,

I have arrived to a point where I am ready to submit the test job. I created 
the job using w2web. The problem is I am using PBS for all of my jobs. Is there 
an option to submit to PBS que straight from the w2web dialog? I am pretty sure 
there is but I am novice at WIEN2k. 

If there is no way to submit it, shall I just use a simple PBS script as 
described here, 
http://www.wien2k.at/reg_user/faq/pbs.job
after I click "only save parameters" dialogue?

thanks

JOnas