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Article

Magnetic Field Perturbations to a Soft X-ray-Activated Fe (II) Molecular Spin State Transition

1
Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
2
Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
3
Physics Department, Indiana University Purdue University-Indianapolis, Indianapolis, IN 46202, USA
4
Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA
5
Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Fabrice Pointillart
Magnetochemistry 2021, 7(10), 135; https://doi.org/10.3390/magnetochemistry7100135
Received: 17 August 2021 / Revised: 10 September 2021 / Accepted: 15 September 2021 / Published: 2 October 2021
(This article belongs to the Section Spin Crossover and Spintronics)
The X-ray-induced spin crossover transition of an Fe (II) molecular thin film in the presence and absence of a magnetic field has been investigated. The thermal activation energy barrier in the soft X-ray activation of the spin crossover transition for [Fe{H2B(pz)2}2(bipy)] molecular thin films is reduced in the presence of an applied magnetic field, as measured through X-ray absorption spectroscopy at various temperatures. The influence of a 1.8 T magnetic field is sufficient to cause deviations from the expected exponential spin state transition behavior which is measured in the field free case. We find that orbital moment diminishes with increasing temperature, relative to the spin moment in the vicinity of room temperature. View Full-Text
Keywords: spin crossover; Fe (II) complex; activation barriers; X-ray excitation; magnetic field effects; [Fe{H2B(pz)2}2(bipy)]; molecular multiferroic spin crossover; Fe (II) complex; activation barriers; X-ray excitation; magnetic field effects; [Fe{H2B(pz)2}2(bipy)]; molecular multiferroic
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MDPI and ACS Style

Hao, G.; N’Diaye, A.T.; Ekanayaka, T.K.; Dale, A.S.; Jiang, X.; Mishra, E.; Mellinger, C.; Yazdani, S.; Freeland, J.W.; Zhang, J.; Cheng, R.; Xu, X.; Dowben, P.A. Magnetic Field Perturbations to a Soft X-ray-Activated Fe (II) Molecular Spin State Transition. Magnetochemistry 2021, 7, 135. https://doi.org/10.3390/magnetochemistry7100135

AMA Style

Hao G, N’Diaye AT, Ekanayaka TK, Dale AS, Jiang X, Mishra E, Mellinger C, Yazdani S, Freeland JW, Zhang J, Cheng R, Xu X, Dowben PA. Magnetic Field Perturbations to a Soft X-ray-Activated Fe (II) Molecular Spin State Transition. Magnetochemistry. 2021; 7(10):135. https://doi.org/10.3390/magnetochemistry7100135

Chicago/Turabian Style

Hao, Guanhua, Alpha T. N’Diaye, Thilini K. Ekanayaka, Ashley S. Dale, Xuanyuan Jiang, Esha Mishra, Corbyn Mellinger, Saeed Yazdani, John W. Freeland, Jian Zhang, Ruihua Cheng, Xiaoshan Xu, and Peter A. Dowben. 2021. "Magnetic Field Perturbations to a Soft X-ray-Activated Fe (II) Molecular Spin State Transition" Magnetochemistry 7, no. 10: 135. https://doi.org/10.3390/magnetochemistry7100135

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