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ON EXCHANGE MECHANISM IN HG1-XMNXS
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
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1994 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 131, 363-368 p.Article in journal (Refereed) Published
Abstract [en]

The magnetic susceptibility of Hg0.95Mn0.05S and Hg0.90Mn0.10S was measured by the SQUID technique. The experimental data were compared with the extended nearest neighbour pair approximation (ENNPA) calculation. The long range exchange interaction J = J(NN)R(-n), with the exponent n = 4, was found for both samples. The nearest neighbour exchange integral J(NN) was found to be around two times smaller than the effective exchange integral J(eff). The small value of the exponent n, which is a characteristic of the narrow gap semimagnetic semiconductors (SMSC’s), as well as the small J(NN)/J(eff) ratio, show the importance of a long-range exchange mechanism.

Place, publisher, year, edition, pages
1994. Vol. 131, 363-368 p.
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Condensed Matter Physics
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URN: urn:nbn:se:uu:diva-195523DOI: 10.1016/0304-8853(94)90281-XOAI: oai:DiVA.org:uu-195523DiVA: diva2:607974
Available from: 2013-02-26 Created: 2013-02-26 Last updated: 2017-12-06

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