  Single shot x-ray diffraction (XRD) experiments have been performed with a
x-ray free electron laser (XFEL) under pulsed high magnetic fields up to 16 T
generated with a nondestructive minicoil. The antiferromagnetic insulator phase
in a perovskite manganaite, Pr$_{0.6}$Ca$_{0.4}$MnO$_{3}$, is collapsed at a
magnetic field of $\approx 8$ T with an emergence of the ferromagnetic metallic
phase, which is observed via the accompanying lattice changes in a series of
the single shot XRD. The feasibility of the single shot XRD experiment under
ultrahigh magnetic fields beyond 100 T is discussed, which is generated with a
portable destructive pulse magnet.
