Electron doping in the double perovskite LaxA2−xCrWO6 with A=Sr and Ca
作者： S. Geprägs , P. Majewski , R. Gross , C. Ritter , L. Alff
DOI: 10.1063/1.2167054
关键词: Condensed matter physics 、 Doping 、 X-ray crystallography 、 Lanthanum 、 Neutron diffraction 、 Ferrimagnetism 、 Curie temperature 、 Ion 、 Neutron scattering 、 Materials science 、 Crystallography
摘要: The ferrimagnetic double perovskites can have high Curie temperatures TC above 600K. In the system Sr2FeMoO6 (TC≈420K) electron doping by substituting, for example, La3+ Sr2+ ions leads to a considerable increase in TC. Here we report same effect LaxCa2−xCrWO6. This demonstrates that generically increases perovskites. However, Sr2CrWO6 (TC≈450K) preferential formation of LaCrO3 prevents La substitution as supported neutron scattering and x-ray diffraction.
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