EPR of the V4+ ion in single crystals of pyrovanadates β-Mg2V2O7, α-Zn2V2O7: Spin-Hamiltonian parameters

Magnetic Resonance in Solids

S.K. Misra¹  S.I. Andronenko² 

[1] Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G 1M8, Canada;Kazan Federal University, Kremlevskaya 18, Kazan 420008, Russia;

关键词: V4+ ion;    Spin-Hamiltonian parameters;    g-matrix;    A-matrix;    EPR;    pyrovanadates;   

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown