Magnetic ordering of Mn and Ru in (La0.52Ba0.48) (Mn0.51Ru0.49)O3

S. Y. Wu, W. H. Li, C. C. Yang, J. W. Lynn, R. S. Liu

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Neutron diffraction, de magnetization, and ac magnetic susceptibility measurements have been performed to study the magnetic properties of perovskite (La0.52Ba0.48)(Mn0.51Ru0.49)O 3. The compound crystallizes into a cubic Pm3m symmetry with a lattice constant of a = 3.9661(4) Å at room temperature. Two anomalies, at around 160 and 60 K, can clearly be seen in the ac susceptibility results, with the peak positions for both anomalies shifting to a higher temperature as a dc magnetic field is applied. Neutron magnetic diffraction measurements show that the anomalies that occur at high and low temperatures are associated with the ferromagnetic ordering of the Mn and the Ru spins, respectively. The ordering temperatures for the Mn and Ru spins were found to be Tc (Mn) ≈ 195 K and Tc (Ru) ≈ 80 K, with a saturated moment of 〈μ2-Mn〉= 2.21(5)μB for the Mn spins and 〈μ2-Ru〉 = 1.00(5)μB for the Ru spins.

Original languageEnglish
Pages (from-to)2233-2241
Number of pages9
JournalPhysica Status Solidi (B) Basic Research
Issue number6
StatePublished - Jun 2007


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