  Using polarized neutron diffraction and x-ray resonant magnetic scattering
(XRMS) techniques, multiple phase transitions were revealed in an underdoped,
non-superconducting Eu(Fe$_{1-x}$Ir$_{x}$)$_{2}$As$_{2}$ ($\mathit{x}$ = 0.06)
single crystal. Compared with the parent compound EuFe$_{2}$As$_{2}$, the
tetragonal-to-orthorhombic structural phase transition and the
antiferromagnetic order of the Fe$^{2+}$ moments are significantly suppressed
to $\mathit{T_{S}}$ = 111 (2) K and $\mathit{T_{N,Fe}}$= 85 (2) K by 6% Ir
doping, respectively. In addition, the Eu$^{2+}$ spins order within the
$\mathit{ab}$ plane in the A-type antiferromagnetic structure similar to the
parent compound. However, the order temperature is evidently suppressed to
$\mathit{T_{N,Eu}}$= 16.0 (5) K by Ir doping. Most strikingly, the XRMS
measurements at the Ir $\mathit{L_{3}}$ edge demonstrates that the Ir
5$\mathit{d}$ states are also magnetically polarized, with the same propagation
vector as the magnetic order of Fe. With $\mathit{T_{N,Ir}}$ = 12.0 (5) K, they
feature a much lower onset temperature compared with $\mathit{T_{N,Fe}}$. Our
observation suggests that the magnetism of the Eu sublattice has a considerable
effect on the magnetic nature of the 5$\mathit{d}$ Ir dopant atoms and there
exists a possible interplay between the localized Eu$^{2+}$ moments and the
conduction $\mathit{d}$-electrons on the FeAs layers.
