  Grain alignment is a key factor that determines the performance of a
superconducting bulk. In this study, the spark plasma texturing (SPT) technique
was used to fabricate a CaKFe$_4$As$_4$ superconducting bulk. X-ray diffraction
and electron backscatter diffraction revealed that the $c$-axes of the
CaKFe$_4$As$_4$ grains in the SPT bulk are aligned, demonstrating that the SPT
technique is effective in achieving $c$-axis texture. In addition, chemical
composition analysis showed that oxide impurities, which affect the grain
boundary characteristics that determine the inter-grain critical current
density ($J_c$), are randomly distributed in the SPT bulk. Magnetization
measurements showed high $J_c$ values of the SPT bulk, reaching 127 kA
cm$^{-2}$ and 26 kA cm$^{-2}$ at 4.2 K under a self-field and magnetic field of
5 T, respectively. These results suggest that the SPT technique is a promising
approach for obtaining a high-performance superconducting bulk material for
high-field applications.
