  We study the effect of applied strain as a physical control parameter for the
phase transitions of Ca(Fe1-xCox)2As2 using resistivity, magnetization, x-ray
diffraction and 57Fe M\"ossbauer spectroscopy. Biaxial strain, namely
compression of the basal plane of the tetragonal unit cell, is created through
firm bonding of samples to a rigid substrate, via differential thermal
expansion. This strain is shown to induce a magneto-structural phase transition
in originally paramagnetic samples; and superconductivity in previously
non-superconducting ones. The magneto-structural transition is gradual as a
consequence of using strain instead of pressure or stress as a tuning
parameter.
