Electron Paramagnetic Resonance of Cr in PbTe |
| T. Story, Z. Wilamowski, E. Grodzicka, B. Witkowska and W. Dobrowolski Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland |
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| We present the results of the low temperature electron paramagnetic resonance (EPR) and transport investigations of the crystals of Pb1-xCrxTe (x ≤ 0.01). The samples with chromium concentrations x ≥ 0.0015 are all n-type. For these samples we observe the single EPR line with the g-factor decreasing from g = 1.97 till g = 1.93 with increasing carrier concentration. This resonance can be attributed to electrically and magnetically active Cr3+ ions. The crystals with Cr concentration x ≤ 0.0015 may be both n- and p-type. The EPR spectrum of these samples consists of two lines: the one discussed above and the other one with g = 1.99 observed only for samples with electron concentration n ≤ 1018 cm-3. |
| DOI: 10.12693/APhysPolA.84.773 PACS numbers: 75.50.Pp, 72.20.My |