Magnetization reversal in Fe(001) films grown by magnetic field assisted molecular beam epitaxy

•Magnetic field assisted molecular beam epitaxy was used for growing Fe(001) films on MgO(001).•Fe(001) films deposited in an external magnetic field have distinctly different morphology from films grown with no field.•Magnetization reversal process in Fe(001) films was studied using magneto-optic Kerr effect magnetometry and microscopy.•Magnetization reversal that occurs via 90° domains differs for the no-field and in-field grown samples.