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In the present work $Fe^{3+}$ sublattice spin reversal and $Fe^{3+}$spin-canting across the magnetic compensation temperature ($T_{Comp}$) aredemonstrated in polycrystalline $Y_{1.5}Gd_{1.5}Fe_{5}O_{12}$ (YGdIG) by meansof in-field $^{57}Fe$ M$\ddot{o}$ssbauer spectroscopy measurements.Corroborating in-field $^{57}Fe$ M$\ddot{o}$ssbauer measurements, both$Fe^{3+}$ & $Gd^{3+}$ sublattice spin reversal has also been manifested withx-ray magnetic circular dichroism (XMCD) measurement in hard x-ray region.Moreover from in-field $^{57}Fe$ M$\ddot{o}$ssbauer measurements, estimationand analysis of effective internal hyperfine field ($H_{eff}$), relativeintensity of absorption lines in a sextet elucidated unambiguously thesignatures of $Fe^{3+}$ spin reversal, their continuous transition and fieldinduced spin-canting of $Fe^{3+}$ sublattices across $T_{Comp}$. Further, Fe K-(Gd $L_{3}$-) edge XMCD signal is observed to consist of additional spectralfeatures, those are identified from $Gd^{3+}$ ($Fe^{3+}$) magnetic ordering,enabling us the extraction of both the sublattices ($Fe^{3+}$ & $Gd^{3+}$)information from a single edge analysis. The evolution of the magnetic momentsas a function of temperature for both magnetic sublattices extracted either atthe Fe K- or Gd $L_3$-edge agree quite well with values that are extracted frombulk magnetization data of YGdIG and YIG ($Y_{3}Fe_{5}O_{12}$). Thesemeasurements pave new avenues to investigate how the magnetic behavior of suchcomplex system acts across the compensation point.

journal of physics. condensed matter

Sublattice spin reversal and field induced $Fe^{3+}$ spin-canting across  the magnetic compensation temperature in $Y_{1.5}Gd_{1.5}Fe_{5}O_{12}$  rare-earth iron garnet