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Crystal structure and cation distribution of the X-type hexaferrite Sr$$_{2}$$Co$$_{2}$$Fe$$_{28}$$O$$_{46}$$

XタイプヘキサフェライトSr$$_{2}$$Co$$_{2}$$Fe$$_{28}$$O$$_{46}$$の結晶構造とカチオン分布

駒淵 舞*; 漆原 大典*; 浅香 透*; 福田 功一郎*; 大原 高志  ; 宗像 孝司*; 石川 喜久*

Komabuchi, Mai*; Urushihara, Daisuke*; Asaka, Toru*; Fukuda, Koichiro*; Ohara, Takashi; Munakata, Koji*; Ishikawa, Yoshihisa*

The crystal structure of an X-type hexaferrite Sr$$_{2}$$Co$$_{2}$$Fe$$_{28}$$O$$_{46}$$ was investigated by the X-ray and neutron diffraction methods for a single crystal. Sr$$_{2}$$Co$$_{2}$$Fe$$_{28}$$O$$_{46}$$ has the crystal structure described as a space group $$Roverline{3}m$$ ($$Z = 3$$) and its lattice constants are $$a$$ = 5.9165(2) ${AA}$; and $$c$$ = 84.1395(33) ${AA}$; at 843 K. Co ions are almost localized in the octahedral site ($$9d$$) in the middle of S$$^{*}$$S$$^{*}$$ blocks. In addition, the adjacent octahedral and tetrahedral sites to $$9d$$ site contain the significant number of Co$$^{2+}$$.

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分野:Physics, Multidisciplinary

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