# NGZF

NGZF = [integer]

Default: **NGZF** = set in accordance with PREC, NGZ, ENCUT and ENAUG

Description: NGZF sets the number of grid points in the "fine" FFT grid along the first lattice vector.

On this "fine" FFT mesh the localized augmentation charges are represented if ultrasoft pseudopotentials (USPPs) or the PAW method are used. In case USPPs are used, the local potentials (exchange-correlation, Hartree-potential, and ionic potentials) are also calculated on this "fine" FFT-mesh.

By default NGZF is set in accordance with the requested "precision" mode PREC, NGZ, and the plane wave kinetic energy cutoffs ENCUT and ENAUG:

where

Alternatively, NGZF can be set to a specific value in the INCAR file.

## Related tags and articles

NGX, NGY, NGZ, NGXF, NGYF, PREC, ENCUT, ENAUG