Origin of the ESR spectrum in the Prussian blue analog RbMn [Fe (CN ) 6 ].H2O

Á Antal, A. Jánossy, L. Forró, E. J M Vertelman, P. J. Van Koningsbruggen, P. H M Van Loosdrecht

Research output: Contribution to journalArticle

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Abstract

We present an electron spin resonance (ESR) study at excitation frequencies of 9.4 and 222.4 GHz of powders and single crystals of a Prussian blue analog (PBA), RbMn [Fe (CN)6].H2O in which Fe and Mn undergoes a charge-transfer transition between 175 and 300 K. The ESR of PBA powders, also reported by Pregelj [J. Magn. Magn. Mater. 316, e680 (2007)]10.1016/j.jmmm.2007. 03.061, is assigned to cubic magnetic clusters of Mn2+ ions surrounding Fe (CN)6 vacancies. The clusters are well isolated from the bulk and are superparamagnetic below 50 K. In single crystals, various defects with lower symmetry are also observed. Spin-lattice relaxation broadens the bulk ESR beyond observability. This strong spin relaxation is unexpected above the charge-transfer transition and is attributed to a mixing of the Mn3+ -Fe2+ state into the prevalent Mn2+ -Fe3+ state.

Original languageEnglish
Article number014422
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number1
DOIs
Publication statusPublished - Jul 21 2010

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Paramagnetic resonance
electron paramagnetic resonance
analogs
Powders
Charge transfer
charge transfer
Single crystals
Spin-lattice relaxation
Crystal defects
single crystals
Observability
Crystal symmetry
crystal defects
spin-lattice relaxation
Vacancies
Ions
symmetry
excitation
crystals
ferric ferrocyanide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Antal, Á., Jánossy, A., Forró, L., Vertelman, E. J. M., Van Koningsbruggen, P. J., & Van Loosdrecht, P. H. M. (2010). Origin of the ESR spectrum in the Prussian blue analog RbMn [Fe (CN ) 6 ].H2O. Physical Review B - Condensed Matter and Materials Physics, 82(1), [014422]. https://doi.org/10.1103/PhysRevB.82.014422

Origin of the ESR spectrum in the Prussian blue analog RbMn [Fe (CN ) 6 ].H2O. / Antal, Á; Jánossy, A.; Forró, L.; Vertelman, E. J M; Van Koningsbruggen, P. J.; Van Loosdrecht, P. H M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 82, No. 1, 014422, 21.07.2010.

Research output: Contribution to journalArticle

Antal, Á ; Jánossy, A. ; Forró, L. ; Vertelman, E. J M ; Van Koningsbruggen, P. J. ; Van Loosdrecht, P. H M. / Origin of the ESR spectrum in the Prussian blue analog RbMn [Fe (CN ) 6 ].H2O. In: Physical Review B - Condensed Matter and Materials Physics. 2010 ; Vol. 82, No. 1.
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