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A Low Temperature (10 K) High-Frequency (208 GHz) EPR Study of the Non-Kramers Ion Mn3+ in a MnMo6Se8 Single Crystal

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Abstract

A high-frequency (208 GHz) electron paramagnetic resonance (EPR) study on Mn3+ (3d4, S = 2) ions embedded in a MnMo6Se8 single crystal has been performed at 10 K. The experimental spectra reveal the presence of only one set of EPR lines from Mn3+ ions, whose magnetic axes are oriented along the crystal axes. The spin-Hamiltonian parameters are evaluated by the method of least-squares, fitting all the observed line positions simultaneously, for the three orthogonal orientations of the external magnetic field. The symmetry of the spin Hamiltonian at the site of the Mn3+ ions has been deduced from the EPR spectra.

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Acknowledgments

S. K. M. is grateful to NSERC (Natural Science and Engineering Research Council of Canada) for partial financial support, as well as to National High Magnetic Field Laboratory (NHMFL) for a Visiting Scientist’s award to carry out this project in Tallahassee, Florida. EPR measurements in this study were performed at the NHMFL, which is funded by the NSF through the Cooperative Agreement No. DMR-0654118, that exists between the State of Florida and the DOE. Assistance of Dr. Andrew Ozorowski in recording the EPR spectra is gratefully acknowledged. Thanks are also due to the German exchange program RISE, which enabled B. Regler to spend 8 weeks during summer, 2010 at Concordia University to work on this project. We are grateful to Professor Alexander Shames of Ben Gurion University, Israel for providing us the crystal used in this study as obtained from Professor Chevrel, University of Rennes, France.

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Authors and Affiliations

  1. Physics Department, Concordia University, 1455 de Maisonneuve Boulevard West, Montreal, QC, H3G 1M8, Canada

    Sushil K. Misra & Benjamin Regler

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  1. Sushil K. Misra
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  2. Benjamin Regler
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Correspondence to Sushil K. Misra.

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Misra, S.K., Regler, B. A Low Temperature (10 K) High-Frequency (208 GHz) EPR Study of the Non-Kramers Ion Mn3+ in a MnMo6Se8 Single Crystal. Appl Magn Reson 44, 401–410 (2013). https://doi.org/10.1007/s00723-012-0380-3

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  • DOI: https://doi.org/10.1007/s00723-012-0380-3

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