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Magnetically Frustrated Double Perovskites: Synthesis, Structural Properties, and Magnetic Order of Sr 2 B OsO 6 ( B = Y, In, Sc)
Author(s) -
Paul Avijit Kumar,
Sarapulova Angelina,
Adler Peter,
Reehuis Manfred,
Kanungo Sudipta,
Mikhailova Daria,
Schnelle Walter,
Hu Zhiwei,
Kuo Changyang,
Siruguri Vasudeva,
Rayaprol Sudhindra,
Soo Yunlian,
Yan Binghai,
Felser Claudia,
Hao Tjeng Liu,
Jansen Martin
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201400590
Subject(s) - antiferromagnetism , monoclinic crystal system , neutron diffraction , crystallography , crystal structure , magnetic moment , lattice (music) , osmium , space group , ion , materials science , condensed matter physics , chemistry , x ray crystallography , diffraction , physics , ruthenium , biochemistry , organic chemistry , acoustics , catalysis , optics
Double perovskites Sr 2 B OsO 6 ( B = Y, In, and Sc) were prepared from the respective binary metal oxides, and their structural, magnetic, and electronic properties were investigated. At room temperature all these compounds crystallize in the monoclinic space group P 2 1 / n . They contain magnetic osmium (Os 5+ , t 2g 3 ) ions and are antiferromagnetic insulators with Néel temperatures T N = 53 K, 26 K, and 92 K for B = Y, In, and Sc, respectively. Powder neutron diffraction studies on Sr 2 YOsO 6 and Sr 2 InOsO 6 showed that the crystal structures remain unchanged down to 3 K. The Y and In compounds feature a type I antiferromagnetic spin structure with ordered Os moments of 1.91 μ B and 1.77 μ B , respectively. The trend in T N does not simply follow the development of the lattice parameters, which suggests that d 0 compared to d 10 ions on the B site favor a somewhat different balance of exchange interactions in the frustrated Os 5+ fcc ‐like lattice.