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Electron spin resonance of FeVO4

100%

Bojanowski B. , Kaczmarek S. M.

Materials Science Poland

2014

tom Vol. 32, No. 2

188--192

We report on electron spin resonance (ESR) investigations of a FeVO4 single crystal. Temperature and angular dependences of ESR resonance positions were measured and calculated in temperature range of 35 – 100 K. The spectra show rich angular dependences of the linewidth, the shape and the resonance field. They consist of a single broad line with asymmetric distortion. Due to the low symmetry of the crystal lattice this distortion can be explained by taking into account the influence of non diagonal dynamic susceptibility.

Growth and EPR properties of ErVO4 single crystals

61%

Leniec G. , Kaczmarek S. M. , Berkowski M. , Głowacki M. , Skibiński T. , Bojanowski B.

Nukleonika

2015

tom Vol. 60, No. 3, part 1

405--410

Single crystals of ErVO4 were grown by the Czochralski method under ambient pressure in a nitrogen atmosphere. Obtained crystals were transparent with strong pink coloring. Electron paramagnetic resonance (EPR) spectra were recorded as a function of the applied magnetic fi eld. Temperature and angular dependences of the EPR spectra of the samples in the 3–300 K temperature range were analyzed applying both Lorentzian– –Gauss approximation for diluted medium and Dyson for dense magnetic medium. EPR-NMR program was done to fi nd local symmetry and spin Hamiltonian parameters of erbium ions.