Ferromagnetism in Mn-doped CuO

Yang, S. G.; Li, T.; Gu, B. X.; Du, Y. W.; Sung, H. Y.; Hung, S. T.; Wong, C. Y.; Pakhomov, A. B.
November 2003
Applied Physics Letters;11/3/2003, Vol. 83 Issue 18, p3746
Academic Journal
Ferromagnetic properties have been observed in CuO doped with 3.5–15 at. % of Mn. The transition from ferromagnetic to paramagnetic phase at T[sub C]=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 T[sub C]. The experimental results suggest a possibility of interpretation in terms of the Zener double-exchange mechanism and strong electron–phonon interactions. © 2003 American Institute of Physics.


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