  In this study, we employ bulk electronic properties characterization and
x-ray scattering/spectroscopy techniques to map the structural, magnetic and
electronic properties of (Eu$_{1-x}$Ca$_{x}$)$_{2}$Ir$_{2}$O$_{7}$ as a
function of Ca-doping. As expected, the metal-insulator transition temperature,
$T_{MIT}$, decreases with Ca-doping until a metallic state is realized down to
2 K. In contrast, $T_{AFM}$ becomes decoupled from the MIT and (likely
short-range) AFM order persists into the metallic regime. This decoupling is
understood as a result of the onset of an electronically phase separated state,
the occurrence of which seemingly depends on both synthesis method and rare
earth site magnetism. PDF analysis suggests that electronic phase separation
occurs without accompanying chemical phase segregation or changes in the
short-range crystallographic symmetry while synchrotron x-ray diffraction
confirms that there is no change in the long-range crystallographic symmetry.
X-ray absorption measurements confirm the $J_{eff}$ = 1/2 character of
(Eu$_{1-x}$Ca$_{x}$)$_{2}$Ir$_{2}$O$_{7}$. Surprisingly these measurements also
indicate a net electron doping, rather than the expected hole doping,
indicating a compensatory mechanism. Lastly, XMCD measurements show a weak Ir
magnetic polarization that is largely unaffected by Ca-doping.
