Solid solubilities of (La Nd,)2(Zr,Ti)2O7 phases deduced by neutron diffraction

Nd2Zr2O7 pyrochlore structure projected down [001]. The structural response on incorporation of La2Zr2O7 and Nd2Ti2O7 has been investigated by neutron diffraction, revealing low solubility of zirconate within the titanate phase, and relaxation around the vacant oxygen site of the pyrochlore on incorporation of La.