TY - JOUR
T1 - High-temperature ferromagnetism and tunable semiconductivity of (Ba, Sr)M2±xRu4±xO11 (M = Fe, Co)
T2 - A new paradigm for spintronics
AU - Shlyk, Larysa
AU - Kryukov, Sergiy
AU - Schüpp-Niewa, Barbara
AU - Niewa, Rainer
AU - De Long, Lance E.
PY - 2008/4/4
Y1 - 2008/4/4
N2 - The high-temperature ferromagnetism and tunable semiconductivity of ternary ruthenium ferrites that offer a new paradigm for spintronics was investigated. Single crystals and polycrystals of strontium ferrites were prepared, whose physical properties were compared to those of the barium ferrites. Polycrystals of SrFe3Ru3O11 were synthesized by heating of a mixture of stoichiometric amounts of SrCO3, RuO2, and FeO3 to 1190°C for 15 hours. Rietveld refinement of the X-ray powder diffraction data was consistent with the composition SrFe 3.0Ru3.0O11. It was observed that (Ba,Sr)-Fe2±xRu4∓xO11 are narrow-gap semiconductors with Curie temperatures at or above room temperature.
AB - The high-temperature ferromagnetism and tunable semiconductivity of ternary ruthenium ferrites that offer a new paradigm for spintronics was investigated. Single crystals and polycrystals of strontium ferrites were prepared, whose physical properties were compared to those of the barium ferrites. Polycrystals of SrFe3Ru3O11 were synthesized by heating of a mixture of stoichiometric amounts of SrCO3, RuO2, and FeO3 to 1190°C for 15 hours. Rietveld refinement of the X-ray powder diffraction data was consistent with the composition SrFe 3.0Ru3.0O11. It was observed that (Ba,Sr)-Fe2±xRu4∓xO11 are narrow-gap semiconductors with Curie temperatures at or above room temperature.
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U2 - 10.1002/adma.200701951
DO - 10.1002/adma.200701951
M3 - Article
AN - SCOPUS:51849155783
SN - 0935-9648
VL - 20
SP - 1315
EP - 1320
JO - Advanced Materials
JF - Advanced Materials
IS - 7
ER -