Hello,
you can either use celldm — and in this case, do not forget to specify
celldm(1) — or you can use
CELL_PARAMETERS angstrom
but not both.
hth
On 2/15/23 15:23, Mr. Sheharyar Pervez RA FES wrote:
I am trying to do a vc-relax calculation but I keep getting the error:
Error in routine iosys (1):
invalid lattice parameters ( celldm or a )
The complete input file is attached but the celldm portion of my file
is as follows:
ibrav=12,
celldm(2)=1.150954372306601,
celldm(3)=1.7205901956662084,
celldm(4)=-2.165080936914835e-06,
I computed these values using the description in pw.x where for ibrav = 12
12 Monoclinic P, unique axis c celldm(2)=b/a
celldm(3)=c/a,
celldm(4)=cos(ab)
The values for a, b, and gamma are in the cif file:
_cell_length_a 6.62096695
_cell_length_b 7.62043086
_cell_length_c 11.39197082
_cell_angle_alpha 89.99974724
_cell_angle_beta 97.26688153
_cell_angle_gamma 90.00012405
Was there anything else I was supposed to do?
_______________________________________________
The Quantum ESPRESSO community stands by the Ukrainian
people and expresses its concerns about the devastating
effects that the Russian military offensive has on their
country and on the free and peaceful scientific, cultural,
and economic cooperation amongst peoples
_______________________________________________
Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
users mailing listus...@lists.quantum-espresso.org
https://lists.quantum-espresso.org/mailman/listinfo/users
--
Dr. Lorenzo Paulatto
IdR @ IMPMC - CNRS UMR 7590 & Sorbonne Université
phone: +33 (0)1 442 79822 / skype: paulatz
http://www.impmc.upmc.fr/~paulatto/ - https://anharmonic.github.io/
23-24/423 B115, 4 place Jussieu 75252 Paris CX 05
_______________________________________________
The Quantum ESPRESSO community stands by the Ukrainian
people and expresses its concerns about the devastating
effects that the Russian military offensive has on their
country and on the free and peaceful scientific, cultural,
and economic cooperation amongst peoples
_______________________________________________
Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
users mailing list users@lists.quantum-espresso.org
https://lists.quantum-espresso.org/mailman/listinfo/users