TY  - JOUR
TI  - EPR evidence of paramagnetic to spin glass transition in Zn1-xMnxSe:Fe2+ single
      crystals
T2  - Semiconductor Physics, Quantum Electronics & Optoelectronics
AU  - Uriadov, A.V.
AU  - Ivanchenko, I.V.
AU  - Popenko, N.A.
AU  - Bekirov, B.E.
AU  - Kalabukhova, E.N.
AU  - Tkach, V.M.
AU  - Savchenko, D.V.
VL  - 28
IS  - 3
SP  - 329
EP  - 334
PY  - 2025
DO  - 10.15407/spqeo28.03.329
UR  - https://doi.org/10.15407/spqeo28.03.329
AB  - In this work, the paramagnetic-to-spin glass transition in Zn1–xMnxSe:Fe2+
      single crystals by using the analysis of temperature-dependent electron
      paramagnetic resonance (EPR) spectra were investigated. The transition is
      characterized by the broadening and a decrease in the amplitude of a single
      Lorentzian resonance line at g ~ 2.01, with critical freezing temperatures Tf at
      approximately 5.7 K for x = 0.2 and 8.0 K for x = 0.3. At lower temperatures,
      EPR spectra reveal three distinct paramagnetic centers attributed to Fe3+ ions
      at g ~ 4.3, strongly interacting Fe ions at g ~ 2.05, and a vacancy-type center
      at g ~ 2.003. These results indicate that iron doping promotes Mn clustering and
      stabilizes the spin glass phase, affecting the magnetic properties of
      Zn1–xMnxSe.
KW  - EPR
KW  - iron
KW  - zinc manganese selenide
KW  - spin glass transition
ER  -