Growth and EPR properties of KSm(WO4)2 and KEr(WO4)2 single crystals

Grzegorz Leniec 1 , Tomasz Skibiński 1 , Slawomir Kaczmarek 1 , Przemyslaw Iwanowski 2 , and Marek Berkowski 2
  • 1 Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Al. Piastow 48, 70-311, Szczecin, Poland
  • 2 Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668, Warsaw, Poland

Abstract

Growth conditions and electron paramagnetic resonance investigations of two well oriented KSm(WO4)2 and KEr(WO4)2 single crystals have been presented and discussed. Hyperfine structure of Sm3+ ion was detected and analyzed for angular and temperature dependences. EPR spectra of KEr(WO4)2 and its angular dependence showed the presence of 5 magnetically nonequivalent Er centers in the crystal. A change in the type of magnetic interactions was analyzed using mixed (Gaussian and Lorentzian) fits of the EPR spectra.

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