Magnetic Susceptibility and Charge State of Gd Impurity in Pb1-xSnxTe⟨Gd⟩ Crystals
D.M. Zayachuk, R.D. Ivanchuk, V.I. Kempnyk and V.I. Mikityuk
Dept. of Physical Electronics, Chernivtsi State University, 2 Kotsyubynsky St., Chernivtsi 274012, Ukraine
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The effective magnetic momentum peff of Gd-impurities in the Pb1-xSnxTe⟨Gd⟩ crystals as a function of crystal composition x with 0 ≤ x ≤ 0.25 is studied. It is shown that with the increase in tin content in the crystals from 0 to 0.15, p2eff(Gd) increases slowly from 37 to 43. Then p2eff(Gd) increases abruptly to 63 value when x = 0.16±0.01. For subsequent increase x ≥ 0.17 p2eff(Gd) remains constant at 63. Possible reasons of observed changes of peff(Gd) and possible mechanisms of influence of the Pb1-xSnxTe crystal field on the effective magnetic momentum value of Gd-impurities in the crystals under study are analysed.
DOI: 10.12693/APhysPolA.90.985
PACS numbers: 75.50.Pp