Re: [Wien] How to use the ElaStic1.0 package to calculate the elastic properties
Thanks Dr. Víctor Luaña and Dr Gavin Abo for your reply Firstly : I'm using Ubuntu as an operating system and I have some information about the shells but some times the explanations are ambigous. Secondly , I thank both you for your explanations that they are very clear for me . I will use them to do the calculations and I will tell about the results. Thank you again Best Regards -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] How to use the ElaStic1.0 package to calculate the elastic properties
Thanks Dr Abo for your reply and for your interesting to my questions I have already read the readme file and i have found a problem with the first step : STEP 0.1: The ElaSticROOT shell variable must be set by the user. For instance, add the following line with the correct ElaStic path, in the .bashrc file: export ElaSticROOT=/home/dir1/dir2/ElaStic Can you explain more about : the elastROOT give me an example about how to set : ElaSticROOT=/home/dir1/dir2/ElaStic did export a command to execute in the reminal ? Thanks -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] How to use the ElaStic1.0 package to calculate the elastic properties
Hello all the developpers of wien2k I want to know how to use the package ElaStic 1.0 to calculate the elastic properties within wien2k . As you know there is a tutorial to use this package within exciting package but there is not any one for wien2k. I have tried to use the above tutorial as guiding but i got some problems. I will be very grateful -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] Position of Atoms in AFM calculation.
Dear Murugan I'm also working on the antiferromagnetic calculation and for the materials that have high symmetry like cubic systems, we do not need to use supercell function to do that like the examples of Cr and NiO. The antiferromagnetic structure of your material is linked below: Good luck -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie DyPdBi-afm.struct Description: Binary data ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] How to fix this error?
Hello again When trying to execute a simple example, I found that the problem is at the level of execution of LAPW2 program: regabdou@algerien1970-Dell:~/WIEN2k/TiC-sp$ runsp_lapw hup: Command not found. STOP LAPW0 END STOP LAPW1 END STOP LAPW1 END STOP FERMI - Error and the error message in file uplapw2.error is: 'FERMI' - EFERMI OUT OF ENERGY RANGE 'FERMI' - STOP IN EFI 'FERMI' - ENERGY OF LOWER BOUND : -2.91477 'FERMI' - NUMBER OF STATES AT THE LOWER BOUND : 16.72392 'FERMI' - ENERGY OF UPPER BOUND : -2.91477 'FERMI' - NUMBER OF STATES AT THE UPPER BOUND : 16.72405 'FERMI' - ADD 4.17600 'FERMI' - SOS 0..........000 'FERMI' - NOS ** Would help to fix this error -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] How to fix this error?
Hello again The problem still at the level of LAPW2 program. I have tried to do the calculation of the example of Ni , there is no problem in initialization but i found the error when doing SCF calculation when i obtained this message: regabdou@algerien1970-Dell:~/WIEN2k/Ni-ferro$ runsp_lapw hup: Command not found. STOP LAPW0 END STOP LAPW1 END STOP LAPW1 END STOP LAPW2: semicore band-ranges too large (standard_in) 1: syntax error (standard_in) 1: syntax error (standard_in) 1: syntax error (standard_in) 1: syntax error (standard_in) 1: syntax error (standard_in) 1: syntax error (standard_in) 1: syntax error (standard_in) 1: syntax error (standard_in) 1: syntax error stop error -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] How to fix this error?
Hello again Now and trying to execute the example of rutile i found this error at the level of mixer program as before: regabdou@algerien1970-Dell:~/WIEN2k/TiO2-min$ run_lapw -p -fc 1.0 hup: Command not found. STOP LAPW0 END STOP LAPW1 END STOP LAPW1 END STOP LAPW1 END STOP LAPW1 END STOP LAPW1 END STOP LAPW2 - FERMI; weighs written STOP LAPW2 END STOP LAPW2 END STOP LAPW2 END STOP LAPW2 END STOP LAPW2 END STOP SUMPARA END STOP CORE END *** Error in `/home/regabdou/wien2k-2014/mixer': malloc(): memory corruption: 0x083be1b0 *** stop error I will be very grateful -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] Error while running +/- 0.5e calculation
Thank you Mr Gavin for all the information I repeated the calculation and i have found the samr results: algerien1970@algerien1970-Dell:~$ F_eff.pl eV = 4.69830736495689 F_eff = 0.34531143355 Ry = 4.69830736495689 eV 0.438 - F_eff = 0.092688566445 Ry Best regards -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] Error while running +/- 0.5e calculation
Thank you Mr Gavin for your reply and especially for your interesting to my questions. I have fixed the error and there was a problem in the structure file. Now every thing is ok but i didn't find the same results as in the paper of Madsen and novak. My results are as follows: 1/ First result --- FER --- in 1 files: NiO_+.50.scf::FER : F E R M I - ENERGY(GAUSS-.M.)= 0.43229 --- 3dd001 --- in 1 files: NiO_+.50.scf::3DD001: 3D* -0.007129869 Ry 2/ Second result --- FER --- in 1 files: NiO_+.50.scf::FER : F E R M I - ENERGY(GAUSS-.M.)= 0.43229 --- 3d --- in 1 files: NiO_+.50.scf::3D 001: 3D -0.027686778 Ry 3/ Third result --- FER --- in 1 files: NiO_+.5-0.scf::FER : F E R M I - ENERGY(GAUSS-.M.)= 0.46699 --- 3dd001 --- in 1 files: NiO_+.5-0.scf::3DD001: 3D* -0.332762453 Ry 4/ Fourth result --- FER --- in 1 files: NiO_+.5-0.scf::FER : F E R M I - ENERGY(GAUSS-.M.)= 0.46699 --- 3d --- in 1 files: NiO_+.5-0.scf::3D 001: 3D -0.333786554 Ry When i have applied the equation i did'nt find the same result as in the paper My result is U= 0.314 Ry Then i think i have made mistake but i don't know where? My best regards -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] Fwd: Error while running +/- 0.5e calculation
- Yurko Natanzon http://www.mail-archive.com/search?l=wien@zeus.theochem.tuwien.ac.atq=from:%22Yurko+Natanzon%22 Wed, 18 Jun 2008 20:34:21 +0200 http://www.mail-archive.com/search?l=wien@zeus.theochem.tuwien.ac.atq=date:20080618 but i didn't find reply. When i wanted to do same calculation (same example:NiO) with the same files , i found this error in the file uplapw1.error 'SELECT' - no energy limits found for L= 1 'SELECT' - E-bottom -1.51500 E-top -200.0 Can any one help me to fix this error best regards -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] Error while running +/- 0.5e calculation
Dear wien2k users I have found this mail send by Yurko Natanzon http://www.mail-archive.com/search?l=wien@zeus.theochem.tuwien.ac.atq=from:%22Yurko+Natanzon%22 Wed, 18 Jun 2008 20:34:21 +0200 http://www.mail-archive.com/search?l=wien@zeus.theochem.tuwien.ac.atq=date:20080618 but i didn't find reply. When i wanted to do same calculation (same example:NiO) with the same 'SELECT' - no energy limits found for L= 1 'SELECT' - E-bottom -1.51500 E-top -200.0 Best regards -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] Calculating the room temperature properties with LDA+U OR GGA+U methods
Dear wien2k's users as Rocquefelet said To conclude, when I use LDA+U or GGA+U, I always consider a set of properties. I choose the Ueff value to reproduce one property and then I use this Ueff value to predict the others. For sure it can be problematic in some cases but it works quite nicely in general. Can we use theses methodes to calculate the room temperature properties of a material if we reproduce the room temperature lattice constants with the parameter U best wishes -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] How to set the d orbitals to do calculation with LDA+U
Dear wien2k users I'm doing a calculation of transition-metal material NiO with the LDA+U methode and I want to know how to set the correlated states (d orbitals) . I will be very grateful -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] RE How to do the different magnetic calculation for a material (for example:NiO)
Thanks Lyudmila http://www.mail-archive.com/search?l=wien@zeus.theochem.tuwien.ac.atq=from:%22Lyudmila+Dobysheva%22 for your reply I agree with you in text they call it nonmagnetic, and only in Figs they write para. As Dr Blaha said, non magnetic phase is not the paramagnetic one. Now I want to know how to determine the dimension of the supercell for the four types of antiferromagnetism? Best wishes -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] RE How to do the different magnetic calculation for a material (for example:NiO)
Thanks Mr Delamora for your reply But I want to know how to do a paramagnetic calculation A paramagnetic calculation is a non magnetic one or not? Thanks -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] RE How to do the different magnetic calculation for a material (for example:NiO)
Thanks Mr Postnikov and Mr Delamora for your replies I have some questions: 1/ How to choose the supercell dimension for the different types of antiferromagnetic calculation: 2x1x1 , 1x2x1 or 1x1x2 ? 2/ I found in some documentation that they have done a paramagnetic calculation with wien2k code like what's mentionned below: -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] RE How to do the different magnetic calculation for a material (for example:NiO)
Here is the link for the file *FILE https://mail-attachment.googleusercontent.com/attachment/u/0/?ui=2ik=81028ca901view=attth=14a7d70d1a59f410attid=0.1disp=saferealattid=f_i4305u8v0zwsadnir=2saduie=AG9B_P9LHGqaCRteydHS2SGpzg9Xsadet=1419444248990sads=nJsudRIrw3kPD6W3fbD6EX8wJAQ* -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] RE How to do the different magnetic calculation for a material (for example:NiO)
I want to do a magnetic calculation for the NiO in NaCl structure. I know how to do a ferromagnetic calculation and I know that the antiferromagnetic calculation need to use supercell but how to do that? I want to do a paramagnetic calculation but I don't know how to do it and as dr Blaha said that a paramagnetic calculation is not a non magnetic one. I want also to do a diamagnetic calculation if it's possible. Thanks -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] How to do the different magnetic calculation for a material (for example:NiO)
Dear Wien2k users I'm a beginner in the magnetic calculation, and I want to know how to do a paramagnetic, diamagnetic, ferromagnetic and antiferromagnetic calculation in details? I will be very gratful. -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] What's the crystal structure of NaCl in antiferromagnetic calculation
Thank you again for the detailed explanation. I have some comments to make Every one knows that the magnetic ordering of the NaCl structure of NiO is paramagnetic, while that of the rhombohedral structure is antiferromagnetic. But, my question is about if we have no information about the material. We have to study the magnetic nature of the material under different crystal structures. Thank you again -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] What's the crystal structure of NaCl in antiferromagnetic calculation
Hello again How to reproduce this structure of NiO if we consider the two atoms of Ni (up and dn ) as inequivalent. Here is the structure NiO structure http://4.bp.blogspot.com/-EzItbno5RvU/VHi-n_0yT5I/AJk/Hyf7Qhg_3ao/s1600/Antiferro-NiO.png -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] What's the crystal structure of NaCl in antiferromagnetic calculation
Thank you Mr Delamora for your reply First, we can create the structure of Cr with 2 ways: 1- with one atom and bcc lattice (0,0,0) or 2- with two atoms and P lattice (0,0,0) and (.5,.5,.5) But the second way allows us to do the antiferromagnetic calculation by flipping the spins of one atom. Sceond, the same thing, normally, for the Ni element. We can prodce the structure with 2 ways: 1- with one atom and fcc lattice (0,0,0) or 2- with four atoms and P lattice (0,0,0) (1/2,1/2,0) (0,1/2,1/2) (1/2,0,1/2) Here we can flip the spins of the two atoms of Ni to do the antiferromagnetic calculation. Third, i want to do the same thing with the NaCl structure (NiO) . I have to get two atoms of Ni at least to reproduce te same crystal structure. And starting with this structure i will determine the equilibrium parameters. the question still how to reproduce the NaCl structure with two or four atoms of Ni so we can do antiferromagnetic calculation with this structure. -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] The number of atoms in antiferromagnetic calculation
Thank you Dr pieper and Mr gavin for your replies What i am doing is just a test of the antiferromagnetic calculation because i am a beginner. For that i want to know if the calculation lead to these results. I tested the two structures and i found the same results. Structure 1: 166 R-3m a=5.572783 b=5.72783 c=27.300952 alpha= 90 beta=90 gama=90 Ni1 (0,0,0) Ni2 (0.5,0.5,0.5) O (0.25,0.25,0.25) Structure 2: R a=5.572783 b=5.72783 c=27.300952 alpha= 90 beta=90 gama=120 Ni1 (0,0,0) Ni2 (0.5,0.5,0.5) O (0.25,0.25,0.25) The question is: are the two structures equivalent? -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] The number of atoms in antiferromagnetic calculation
Thanks Mr Gavin for your contribution and for your help. Thank you again -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] What's the crystal structure of NaCl in antiferromagnetic calculation
Dear Wien2k users To do the antiferromagnetic calculation for the bcc Cr, we use the P cubic structure with 2 atoms; and for the fcc Ni we use the P cubic structure with 4 atoms. If we want to do a antiferromagnetic calculation for NaCl cubic structure with 2 atoms, what will be the structure in cubic system? Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] The number of atoms in antiferromagnetic calculation
I have used the structure below for the calculation using the Wien2K-2008 and i found the results as follow: MMINT: 0. MMI001: 1.200 MMI002: -1.20 MMI003: 0.00 MMTOT: 0.000 ENE= - 6372.681304 Ry I want to know if the results are true -- *Mr: A.ReggadLaboratoire de Génie Physique* *Université Ibn Khaldoun Tiaret* *Algerie* ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
Re: [Wien] The number of atoms in antiferromagnetic calculation
I have forgoten to mention the structure i used to have the previous results. The structure is the one given as an example in the userguide. -- *Mr: A.ReggadLaboratoire de Génie Physique* *Université Ibn Khaldoun - Tiaret* *Algerie* ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
[Wien] The number of atoms in antiferromagnetic calculation
Wein users, I'm trying to do a antiferromagnetic calculation for the compound NiO. I have found two structure files: the first with three atoms ( two atoms of Ni and one atom of O. the second with four atoms (two atoms of Ni and two atoms of O). I want to know whitch file to consider? and the space group - Yes, I have browsed the archives AND READ THE USERS GUIDE and the FAQ pages Peter provides, but I couldn't solve my problem that way. ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo/wien SEARCH the MAILING-LIST at: http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
