EPR of the V4+ ion in single crystals of pyrovanadates β-Mg2V2O7, α-Zn2V2O7: Spin-Hamiltonian parameters
Abstract
The angular variation of V4+ electron paramagnetic resonance (EPR) line positions were recorded in single crystals of β-Mg2V2O7 and α-Zn2V2O7 at 120 K and 295 K in three mutually perpendicular planes in the temperature range from 120 to 295 K and at some intermediate temperatures. Least-squares fitting was used by diagonalization of the Spin-Hamiltonian (SH) matrix to determine the SH parameters and the orientations of the principal axes of the g- and A-matrices from the angular variations of the EPR line positions. Although the V4+ SH parameters were found to be similar in the two crystals, the orientations of the principal axes of the g- and A-matrices were not found to be coincident in the two crystals.
Supporting agencies: This work is supported by Natural Sciences and Engineering Research Council of Canada (NSERC) (SKM). SIA is grateful for partial support in the frame of research project allocated to Kazan Federal University, Russia for the state assignment in the sphere of scientific activities (#3.2166.2017/4.6).
About the Authors
S. K. Misra
Concordia University
Canada
Canada
1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G 1M8
S. I. Andronenko
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
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Review
For citations:
Misra S.K., Andronenko S.I. EPR of the V4+ ion in single crystals of pyrovanadates β-Mg2V2O7, α-Zn2V2O7: Spin-Hamiltonian parameters. Magnetic Resonance in Solids. 2018;20(1):18101 (8 pp.).
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