Ferromagnetism in Mn-doped CuO

Ferromagnetism in Mn-doped CuO

Ferromagnetic properties have been observed in CuO doped with 3.5–15 at. % of Mn. The transition from ferromagnetic to paramagnetic phase at TC=80 K is associated with the metal–insulator transition. Magnetoresistance is weakly negative in the vicinity of the transition, but positive in a wide range...

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Veröffentlicht in:Applied physics letters 2003-11, Vol.83 (18), p.3746-3748
Hauptverfasser: Yang, S. G., Li, T., Gu, B. X., Du, Y. W., Sung, H. Y., Hung, S. T., Wong, C. Y., Pakhomov, A. B.
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Sprache:eng
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Zusammenfassung:Ferromagnetic properties have been observed in CuO doped with 3.5–15 at. % of Mn. The transition from ferromagnetic to paramagnetic phase at TC=80 K is associated with the metal–insulator transition. Magnetoresistance is weakly negative in the vicinity of the transition, but positive in a wide range of temperatures below TC. The experimental results suggest a possibility of interpretation in terms of the Zener double-exchange mechanism and strong electron–phonon interactions.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1623944