Electron paramagnetic resonance in Hg1-xMnxTe1-ySey
Апстракт
Electron paramagnetic resonance has been studied in diluted magnetic semiconductor Hg1-xMnxTe1-ySey with y=0.01 and x=0.01, 0.03, 0.05, 0.14 and with y=0.075, x=0.14 in the temperature range 20-290 K. It is found that the EPR linewidth increases with increasing manganese concentration, and decreases with increasing selenium content. From the high temperature linewidth dependence the paramagnetic Curie-Weiss temperature is estimated as \ theta \ = 10 K for the sample with x=0.01, y=0.01 and \ theta \ = 18 K for x=0.03, y=0.01. These values of theta together with those obtained in the magnetic susceptibility measurements give the nearest-neighbour exchange constant in Hg1-xMnxTe1-ySey with y=0.01, J(NN)/k(B)=-5.4 K. The calculated infinite temperature linewidths are considerably smaller than the extrapolated experimental values. We ascribe this effect to a coalescence of the Mn2+ ion six hyperfine lines into a single broad peak.
Кључне речи:
diluted magnetic semiconductors / electron paramagnetic resonance / exchange and superexchangeИзвор:
Materials Science Forum, 2000, 352, 255-260Напомена:
- Trends in Advanced Materials and Processes, 3rd Yugoslov-Materials-Research-Society Conference, Sep 20-24, 1999, Herceg Novi, Yugoslavia
Институција/група
VinčaTY - JOUR AU - Milivojević, Dušan AU - Babić-Stojić, Branka S. AU - Stojić, M. AU - Kulbachinskii, VA AU - Maryanchuk, PD PY - 2000 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6313 AB - Electron paramagnetic resonance has been studied in diluted magnetic semiconductor Hg1-xMnxTe1-ySey with y=0.01 and x=0.01, 0.03, 0.05, 0.14 and with y=0.075, x=0.14 in the temperature range 20-290 K. It is found that the EPR linewidth increases with increasing manganese concentration, and decreases with increasing selenium content. From the high temperature linewidth dependence the paramagnetic Curie-Weiss temperature is estimated as \ theta \ = 10 K for the sample with x=0.01, y=0.01 and \ theta \ = 18 K for x=0.03, y=0.01. These values of theta together with those obtained in the magnetic susceptibility measurements give the nearest-neighbour exchange constant in Hg1-xMnxTe1-ySey with y=0.01, J(NN)/k(B)=-5.4 K. The calculated infinite temperature linewidths are considerably smaller than the extrapolated experimental values. We ascribe this effect to a coalescence of the Mn2+ ion six hyperfine lines into a single broad peak. T2 - Materials Science Forum T1 - Electron paramagnetic resonance in Hg1-xMnxTe1-ySey VL - 352 SP - 255 EP - 260 DO - 10.4028/www.scientific.net/MSF.352.255 ER -
@article{ author = "Milivojević, Dušan and Babić-Stojić, Branka S. and Stojić, M. and Kulbachinskii, VA and Maryanchuk, PD", year = "2000", abstract = "Electron paramagnetic resonance has been studied in diluted magnetic semiconductor Hg1-xMnxTe1-ySey with y=0.01 and x=0.01, 0.03, 0.05, 0.14 and with y=0.075, x=0.14 in the temperature range 20-290 K. It is found that the EPR linewidth increases with increasing manganese concentration, and decreases with increasing selenium content. From the high temperature linewidth dependence the paramagnetic Curie-Weiss temperature is estimated as \ theta \ = 10 K for the sample with x=0.01, y=0.01 and \ theta \ = 18 K for x=0.03, y=0.01. These values of theta together with those obtained in the magnetic susceptibility measurements give the nearest-neighbour exchange constant in Hg1-xMnxTe1-ySey with y=0.01, J(NN)/k(B)=-5.4 K. The calculated infinite temperature linewidths are considerably smaller than the extrapolated experimental values. We ascribe this effect to a coalescence of the Mn2+ ion six hyperfine lines into a single broad peak.", journal = "Materials Science Forum", title = "Electron paramagnetic resonance in Hg1-xMnxTe1-ySey", volume = "352", pages = "255-260", doi = "10.4028/www.scientific.net/MSF.352.255" }
Milivojević, D., Babić-Stojić, B. S., Stojić, M., Kulbachinskii, V.,& Maryanchuk, P.. (2000). Electron paramagnetic resonance in Hg1-xMnxTe1-ySey. in Materials Science Forum, 352, 255-260. https://doi.org/10.4028/www.scientific.net/MSF.352.255
Milivojević D, Babić-Stojić BS, Stojić M, Kulbachinskii V, Maryanchuk P. Electron paramagnetic resonance in Hg1-xMnxTe1-ySey. in Materials Science Forum. 2000;352:255-260. doi:10.4028/www.scientific.net/MSF.352.255 .
Milivojević, Dušan, Babić-Stojić, Branka S., Stojić, M., Kulbachinskii, VA, Maryanchuk, PD, "Electron paramagnetic resonance in Hg1-xMnxTe1-ySey" in Materials Science Forum, 352 (2000):255-260, https://doi.org/10.4028/www.scientific.net/MSF.352.255 . .