Meeting abstract

Electron paramagnetic resonance studies of Hg₁₋ₓMnₓSe

M. Stojić ; “Boris Kidrič” Institute of Nuclear Sciences, Belgrade
B. Babić Stojić ; “Boris Kidrič” Institute of Nuclear Sciences, Belgrade
B. Stošić ; “Boris Kidrič” Institute of Nuclear Sciences, Belgrade

Abstract

The EPR linewidth has been studied in four samples of Hg₁₋ₓMnₓSe with x = 0.09, 0.11, 0.15 and 0.18 as a function of temperature in the range 19 K ≤ T ≤ 290 K, and as a function of dose of ⁶⁰Co gamma irradiation up to 500 kGy. It was found that EPR linewidth depends on temperature as 1/T in the range 50 K ≤ T ≤ 290 K for the samples with x = 0.15 and 0.18, and in the range 25 K ≤ T ≤ 290 K for the samples with x = 0.09 and 0.11. Using Anderson’s model for the EPR linewidth, the exchange integral between the nearest neighbours Mn²⁺ ions was found to be J₁/k ≅ 0.05 K in the sample with x = 0.18. The observed variation of the linewidth with the applied doses of gamma rays in the sample x = 0.09 are discussed in terms of the indirect exchange interaction.

Keywords

Hrčak ID:

339848

URI

https://hrcak.srce.hr/339848

Publication date:

20.12.1989.

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