Neutron powder diffraction study of structural and magnetic ground state of the double perovskite series La2-xSrxCuRuO6 (0 <= x <= 1)
The series of double perovskite oxides La2-xSrxCuRuO6 (0 <= x <= 1) have been reported to have interesting magnetic properties owing to the competing nearest neighbour and next nearest neighbour interactions in combination with the disordered occupancy of Cu and Ru atoms at B/B’ sites. Full profile refinement of x-ray diffraction patterns predicted a monoclinic structure for the end members while the intermediate members displayed triclinic structure. On the other hand, the parent compound La2CuRuO6 is a short range ferrimagnet while the Sr doped samples clearly display antiferromagnetic ordering at low temperature. The antiferromagnetic ground state of members with lower Sr doping was related to the existence of ferrimagnetic clusters which are antiferromagnetically coupled. In the proposed neutron diffraction experiment we plan to determine the composition dependence of magnetic structure, nature of magnetic interactions and the range of magnetic ordering besides improving the structural information of these fundamentally interesting series of oxides.
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D. D. Sarma; IVANOV Sergey Aleksandrovich; MUKHERJEE Sumanta; PAL Banabir; PURI Anil Kumar; RITTER Clemens and ROLAND Mathieu. (2013). Neutron powder diffraction study of structural and magnetic ground state of the double perovskite series La2-xSrxCuRuO6 (0 <= x <= 1). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2277
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