P., Priyanka, P.Priyanka, P.P.N.H., Makani, Nisha HiralalMakani, Nisha HiralalN.H.R., Banerjee, RupakBanerjee, RupakR.I., Sarkar, IndranilSarkar, IndranilI.2025-09-012025-09-019.78E+12095744841361652810.1088/1361-6528/aca9832-s2.0-85144492631https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144492631&doi=10.1088%2F1361-6528%2Faca983&partnerID=40&md5=50ac63b41e9c2d226e57ad5d8fc76e8fhttps://d8.irins.org/handle/IITG2025/2939036562510Spin pumping is a key property for spintronic application that can be realized in heavy metal/ferromagnet bilayers. Here we demonstrate the possibility of improving spin pumping in permalloy (Py)/tantalum (Ta) bilayers through control of Ta heavy metal deposition temperature. Through a combination of structural and ferromagnetic resonance based magnetization dynamics study, we reveal the role of Ta deposition temperature in improving spin mixing conductance which is a key parameter for spin pumping across the Py/Ta interface. The results show that by depositing Ta above room temperature, a high spin mixing conductance of 7.7 �1018 m?2 is obtained with ?-Ta layer. The results present an understanding of the correlation between heavy metal deposition temperature and interface structure improvement and consequent control of spin pumping in Py/Ta bilayers. � 2023 Elsevier B.V., All rights reserved.EnglishDepositionHeavy metalsIron alloysMixingNickel alloysPumpsSpin dynamicsSpin wavesBi-layerDeposition temperaturesEfficiency controlHeavy metal depositionMagnetic dampingPermalloysPumping efficiencySpin mixing conductanceSpin-pumpingTemperature tunedSpintronicsArticlehttps://v2.sherpa.ac.uk/id/publication/1133420231057050