Tunable spin-state bistability in a spin crossover molecular complex
dc.contributor.author | Jiang, Xuanyuan | |
dc.contributor.author | Hao, Guanhua | |
dc.contributor.author | Wang, Xiao | |
dc.contributor.author | Mosey, Aaron | |
dc.contributor.author | Zhang, Xin | |
dc.contributor.author | Yu, Le | |
dc.contributor.author | Yost, Andrew J. | |
dc.contributor.author | Zhang, Xin | |
dc.contributor.author | DiChiara, Anthony D. | |
dc.contributor.author | N'Diaye, Alpha T. | |
dc.contributor.author | Cheng, Xuemei | |
dc.contributor.author | Zhang, Jian | |
dc.contributor.author | Cheng, Ruihua | |
dc.contributor.author | Xu, Xiaoshan | |
dc.contributor.author | Dowben, Peter A. | |
dc.contributor.department | Physics, School of Sciences | en_US |
dc.date.accessioned | 2020-10-13T19:46:54Z | |
dc.date.available | 2020-10-13T19:46:54Z | |
dc.date.issued | 2019 | |
dc.description.abstract | The spin crossover (SCO) transitions at both the surface and over the entire volume of the [Fe{H2B(pz)2}2(bipy)] polycrystalline films on Al2O3 substrates have been studied, where pz = pyrazol-1-yl and bipy = 2,2'-bipyridine. For [Fe{H2B(pz)2}2(bipy)] films of hundreds of nm thick, magnetometry and x-ray absorption spectroscopy measurements show thermal hysteresis in the SCO transition with temperature, although the transition in bulk [Fe{H2B(pz)2}2(bipy)] occurs in a non-hysteretic fashion at 157 K. While the size of the crystallites in those films are similar, the hysteresis becomes more prominent in thinner films, indicating a significant effect of the [Fe{H2B(pz)2}2(bipy)]/Al2O3 interface. Bistability of spin states, which can be inferred from the thermal hysteresis, was directly observed using temperature-dependent x-ray diffraction; the crystallites behave as spin-state domains that coexist during the transition. The difference between the spin state of molecules at the surface of the [Fe{H2B(pz)2}2(bipy)] films and that of the molecules within the films, during the thermal cycle, indicates that both cooperative (intermolecular) effects and coordination are implicated in perturbations to the SCO transition. | en_US |
dc.eprint.version | Author's manuscript | en_US |
dc.identifier.citation | Jiang, X., Hao, G., Wang, X., Mosey, A., Zhang, X., Yu, L., Yost, A. J., Zhang, X., DiChiara, A. D., N’Diaye, A. T., Cheng, X., Zhang, J., Cheng, R., Xu, X., & Dowben, P. A. (2019). Tunable spin-state bistability in a spin crossover molecular complex. Journal of Physics: Condensed Matter, 31(31). https://doi.org/10.1088/1361-648X/ab1a7d | en_US |
dc.identifier.uri | https://hdl.handle.net/1805/24075 | |
dc.language.iso | en | en_US |
dc.publisher | IOP | en_US |
dc.relation.isversionof | 10.1088/1361-648X/ab1a7d | en_US |
dc.relation.journal | Journal of Physics: Condensed Matter | en_US |
dc.rights | Publisher Policy | en_US |
dc.source | Author | en_US |
dc.subject | spin crossover molecule | en_US |
dc.subject | bistability | en_US |
dc.subject | cooperative effects | en_US |
dc.title | Tunable spin-state bistability in a spin crossover molecular complex | en_US |
dc.type | Article | en_US |