Probing the unpaired Fe spins across the spin crossover of a coordination polymer
Probing the unpaired Fe spins across the spin crossover of a coordination polymer
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探测配位聚合物自旋交叉上不成对的 Fe 自旋
DOI:
10.1039/d0ma00612b
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发表时间:
2021
影响因子:
5
通讯作者:
Dowben, Peter A.
中科院分区:
文献类型:
--
作者:
Ekanayaka, Thilini K.;Kurz, Hannah;Dale, Ashley S.;Hao, Guanhua;Mosey, Aaron;Mishra, Esha;N’Diaye, Alpha T.;Cheng, Ruihua;Weber, Birgit;Dowben, Peter A.
For the spin crossover coordination polymer [Fe(L1)(bipy)]n (where L1 is a N2O22− coordinating Schiff base-like ligand bearing a phenazine fluorophore and bipy = 4,4′-bipyridine), there is compelling additional evidence of a spin state transition. Both Fe 2p X-ray absorption and X-ray core level photoemission spectroscopies confirm that a spin crossover takes place, as observed by magnetometry. Yet the details of the temperature dependent changes of the spin state inferred from both X-ray absorption and X-ray core level photoemission, differ from magnetometry, particularly with regard to the apparent critical transition temperatures and the cooperative nature of the curve progression in general. Comparing the experimental spin crossover data to Ising model simulations, a transition activation energy in the region of 160 to 175 meV is indicated, along with a nonzero exchange J. Overall, the implication is that there may be perturbations to the bistability of spin states, that are measurement dependent or that the surface differs from the bulk with regard to the cooperative effects observed upon spin transition.
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影响因子:
16.6
作者:
Gopakumar, Thiruvancheril G.;Matino, Francesca;Berndt, Richard
通讯作者:
Berndt, Richard
影响因子:
--
作者:
Jie Xiao;P. Dowben
通讯作者:
Jie Xiao;P. Dowben
影响因子:
4.9
作者:
Bauer, Wolfgang;Schlamp, Stephan;Weber, Birgit
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Weber, Birgit
影响因子:
--
作者:
Guionneau, P;Létard, JF;Kahn, O
通讯作者:
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影响因子:
17.1
作者:
Bernien, Matthias;Naggert, Holger;Kuch, Wolfgang
通讯作者:
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