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Nénert G, Fabelo O, Forsberg K, et al. Structural and magnetic properties of the low-dimensional fluoride β-FeF3(H2O)2·H2O. Dalton Trans. 2015;44(31):14130-8doi: 10.1039/c5dt02242h.
Nénert, G., Fabelo, O., Forsberg, K., Colin, C. V., & Rodríguez-Carvajal, J. (2015). Structural and magnetic properties of the low-dimensional fluoride β-FeF3(H2O)2·H2O. Dalton transactions (Cambridge, England : 2003), 44(31), 14130-8. https://doi.org/10.1039/c5dt02242h
Nénert, Gwilherm, et al. "Structural and magnetic properties of the low-dimensional fluoride β-FeF3(H2O)2·H2O." Dalton transactions (Cambridge, England : 2003) vol. 44,31 (2015): 14130-8. doi: https://doi.org/10.1039/c5dt02242h
Nénert G, Fabelo O, Forsberg K, Colin CV, Rodríguez-Carvajal J. Structural and magnetic properties of the low-dimensional fluoride β-FeF3(H2O)2·H2O. Dalton Trans. 2015 Aug 21;44(31):14130-8. doi: 10.1039/c5dt02242h. PMID: 26174497.
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Dalton Trans. 2015 Aug 21;44(31):14130-8. doi: 10.1039/c5dt02242h.

Structural and magnetic properties of the low-dimensional fluoride β-FeF3(H2O)2·H2O.

Dalton transactions (Cambridge, England : 2003)

Gwilherm Nénert, Oscar Fabelo, Kerstin Forsberg, Claire V Colin, Juan Rodríguez-Carvajal

Affiliations

  1. PANalytical B. V., Lelyweg 1, 7602 EA Almelo, The Netherlands. [email protected].

PMID: 26174497 DOI: 10.1039/c5dt02242h

Abstract

We have reinvestigated the crystal structure of the low-dimensional fluoride β-FeF3(H2O)2·H2O using high resolution neutron and X-ray diffraction data. Moreover we have studied the magnetic behavior of this material combining medium resolution and high flux neutron powder diffraction together with magnetic susceptibility measurements. This fluoride compound exhibits vertex-shared 1D Fe(3+) octahedral chains, which are extended along the c-axis. The magnetic interactions between adjacent chains involve super-superexchange interactions via an extensive network of hydrogen bonds. This interchain hydrogen bonding scheme is sufficiently strong to induce a long range magnetic order appearing below T = 20(1) K. The magnetic order is characterized by the propagation vector k = (0, 0, 1/2), giving rise to a strictly antiferromagnetic structure where the Fe(3+) spins are lying within the ab-plane. Magnetic exchange couplings extracted from magnetization measurements are found to be J∥/kb = -18 K and J⊥/kb = -3 K. These values are in good agreement with the neutron diffraction data, which show that the system became antiferromagnetically ordered at ca. TN = 20(1) K.

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