doi:10.1002/admi.202300146engBartolomé, ElenaFerrari, LudovicaSedona, FrancescoArauzo, AnaRubín, JavierLuzón, JavierHerrero-Albillos, JuliaPanighel, MircoMugarza, AitorRancan, MarzioSambi, MauroArmelao, LidiaBartolomé, JuanBartolomé, FernandoSurface Deposition Induced Reduction of the Ground State Spin in Cr10 WheelART-2023-134479We report the deposition of monolayers and multilayers of {Cr10(OMe)20(O2CCMe3)10} wheels, hereafter {Cr10}, onto Au(111) and Cu(111) single‐crystal substrates, and their characterization combining scanning tunneling microscopy, X‐ray photoelectron spectroscopy, X‐ray absorption spectroscopy, X‐ray natural linear dichroism, and X‐ray magnetic circular dichroism (XMCD). {Cr10} in bulk shows axial magnetic anisotropy and a cluster total spin S  =  9 ground state, stemming from an interaction scheme of two semi‐crowns containing four Cr3+ ions interacting ferromagnetically, separated by two Cr3+ antiferromagnetically coupled. The one‐monolayer (1ML) samples of {Cr10} sublimated on Ag(111) and Cu(111) show slightly different applied magnetic field dependence of XMCD signal. The field‐dependence of the magnetization evolves from a lower curve for the 1ML {Cr10} samples to a curve resembling the bulk one as the number of layers is increased, as shown in a 14ML sample. Monte Carlo simulations allow rationalizing the magnetization curves of the 1ML samples in terms of a reduction of the cluster ground‐state total spin, S  =  3 or S  =  6, as a consequence of variations in the intra‐wheel coupling interactions induced by the on‐surface deposition. The sensitivity of the magnetic configuration of {Cr10} to minor distortions of the intramolecular conformation might be exploited to control magnetism by external stimuli for applications.2023http://zaguan.unizar.es/record/12708010.1002/admi.202300146http://zaguan.unizar.es/record/127080oai:zaguan.unizar.es:127080info:eu-repo/grantAgreement/ES/DGA-FSE/E12-23R-RASMIAinfo:eu-repo/grantAgreement/ES/AEI/PID2020-115159GB-I00/AEI/10.13039/501100011033Advanced Materials Interfaces 10, 20 (2023), 2300146 [15 pp.]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess