Magnetic properties of polycrystalline CoxZn1-xO (0.75 LT = x LT = 1) solid solutions
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The influence of the magnetic ions dilution on the crystal and magnetic structures of CoxZn1-xO (x = 1, 0.90, 0.83, 0.75) solid solutions has been studied by the neutron diffraction and magnetic susceptibility measurements. It has been concluded that magnetic ordering of CoO is preserved in CoxZn1-xO regardless of the magnetic dilution for x greater than or equal to 0.75. This is confirmed independently by three different methods: Rietveld refinement of the magnetic structure, dependence of magnetic moments vs. temperature, and variation of the reduced Neel temperatures t = T-N(x)/T-N(1) with concentration. (C) 2004 Elsevier B.V. All rights reserved.
Keywords:diluted magnetic / neutron diffraction / magnetic ordering / magnetic phase transitions
Source:Journal of Magnetism and Magnetic Materials, 2004, 272, 1390-1392
- International Conference on Magnetism (ICM 2003), Jul 27-Aug 01, 2003, Rome, Italy