The search for new ferroelectric materials, where the ferroelectricity results from magnetic frustration, has been a topic of great interest to the condensed matter physics community. Recently ferroelectricity (FE), driven by magnetostriction, has been found in the geometrically frustrated spin-chain compound Ca3CoMnO6. In a recent powder neutron diffraction investigation of Ca3CoMnO6 we observed a magnetic phase separation, where one magnetic phase is magnetostrictive and the second one is not magnetostrictive. The two magnetic structures in Ca3CoMnO6 are very close in energy and strain could tip the balance in favour of one magnetic phase over the other. We propose to investigate the effects of strain on the lattice and magnetic structure of Ca3CoMnO6 by performing a neutron diffraction study of three samples, with different strain, using the HRPD instrument.