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論文

Synthesis, direct formation under high pressure, structure, and electronic properties of LiNbO$$_{3}$$-type oxide PbZnO$$_{3}$$

森 大輔*; 田中 樹恵*; 齋藤 寛之; 亀卦川 卓美*; 稲熊 宜之*

Inorganic Chemistry, 54(23), p.11405 - 11410, 2015/12

https://doi.org/10.1021/acs.inorgchem.5b02049
 被引用回数：28 パーセンタイル：81.65(Chemistry, Inorganic & Nuclear)

A novel LiNbO$$_{3}$$-type (LN-type) lead zinc oxide, PbZnO$$_{3}$$, was successfully synthesized under high pressure and temperature. Rietveld structure refinement using synchrotron powder X-ray diffraction (XRD) data demonstrated that LN-type PbZnO$$_{3}$$ crystallized into a trigonal structure with a polar space group ($$R3c$$).

論文

Synthesis, structural transformation, thermal stability, valence state, and magnetic and electronic properties of PbNiO$$_{3}$$ with perovskite- and LiNbO$$_{3}$$-type structures

稲熊 宜之*; 田中 樹恵*; 土谷 武史*; 森 大輔*; 勝又 哲裕*; 大場 友則*; 開 康一*; 高橋 利宏*; 齋藤 寛之

Journal of the American Chemical Society, 133(42), p.16920 - 16929, 2011/09

https://doi.org/10.1021/ja206247j
 被引用回数：84 パーセンタイル：85.78(Chemistry, Multidisciplinary)

We synthesized two high-pressure polymorphs PbNiO$$_{3}$$ with different structures, a perovskite-type and a LiNbO$$_{3}$$-type structure, and investigated their formation behavior, detailed structure, structural transformation, thermal stability, valence state of cations, and magnetic and electronic properties. A perovskite-type PbNiO$$_{3}$$ synthesized at 800$$^{circ}$$C under a pressure of 3 GPa crystallizes as an orthorhombic GdFeO$$_{3}$$-type structure with a space group Pnma. The reaction under high pressure was monitored by an in situ energy dispersive X-ray diffraction experiment, which revealed that a perovskit-type phase was formed even at 400$$^{circ}$$C under 3 GPa.

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