In the present work Fe 3+ & Gd 3+ sublattice spin reversal and Fe 3+ spin-canting across the magnetic compensation temperature (TComp) are demonstrated in polycrystalline Y1.5Gd1.5Fe5O12 (YGdIG) with in-field 57 F e Mössbauer spectroscopy and hard x-ray magnetic circular dichroism (XMCD) measurements. From in-field 57 F e Mössbauer measurements, estimation and analysis of effective internal hyperfine field (H eff ), relative intensity of absorption lines in a sextet elucidated unambiguously the signatures of Fe 3+ spin reversal, their continuous transition and field induced spin-canting of Fe 3+ sublattices across TComp. Further, Fe K-(Gd L3-) edge XMCD data is observed to consist the spectral features from Gd 3+ (Fe 3+ ) magnetic ordering enabling the extraction of both the sublattice (Fe 3+ & Gd 3+ ) information from a single edge XMCD analysis. The observed magnetic moment variation of both the sublattices extracted from either Fe K-or Gd L3-edge XMCD data is observed to follow the trend of bulk magnetization.
In the present work Fe\textsuperscript{3+} sublattice spin reversal and Fe\textsuperscript{3+} spin-canting across the magnetic compensation temperature (T\textsubscript{Comp}) are demonstrated in polycrystalline Y\textsubscript{1.5}Gd\textsubscript{1.5}Fe\textsubscript{5}O\textsubscript{12} (YGdIG) by means of in-field $^{57}Fe$ M$\ddot{o}$ssbauer spectroscopy measurements. Corroborating in-field $^{57}Fe$ M$\ddot{o}$ssbauer measurements, both Fe\textsuperscript{3+} \& Gd\textsuperscript{3+} sublattice spin reversal has also been manifested in hard x-ray magnetic circular dichroism (XMCD) measurements. From in-field $^{57}Fe$ M$\ddot{o}$ssbauer measurements, estimation and analysis of effective internal hyperfine field (H\textsubscript{eff}), relative intensity of absorption lines in a sextet elucidated unambiguously the signatures of Fe\textsuperscript{3+} spin reversal and field induced spin-canting of Fe\textsuperscript{3+} sublattices across T\textsubscript{Comp}. Gd L\textsubscript{3}-edge XMCD signal is observed to consist of an additional spectral feature, identified as Fe\textsuperscript{3+} magnetic contribution to XMCD spectra of Gd L\textsubscript{3}-edge, enabling us the extraction of both the sublattices (Fe\textsuperscript{3+} \& Gd\textsuperscript{3+}) information from a single absorption edge analysis. The evolution of the XMCD amplitudes, which is proportional to magnetic moments, as a function of temperature for both magnetic sublattices extracted at the Gd L\textsubscript{3}-edge reasonably match with values that are extracted from bulk magnetization data of YGdIG and YIG (Y\textsubscript{3}Fe\textsubscript{5}O\textsubscript{12}) and corresponding Fe K-edge XMCD amplitudes for Fe contribution. These measurements pave new avenues to investigate how the magnetic behavior of such complex system acts across the compensation point.
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