Synthesis and structure of Sr2MnGaO5, a new layered manganese oxide

被引:25
作者
Wright, AJ [1 ]
Palmer, HM [1 ]
Anderson, PA [1 ]
Greaves, C [1 ]
机构
[1] Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England
关键词
Layered material; Manganese oxide;
D O I
10.1039/b100358p
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A new layered manganese oxide, Sr2MnGaO5, has been synthesised and Rietveld analysis of X-ray powder diffraction data has shown it to be an oxygen deficient perovskite with the brownmillerite structure: a = 5.5033(6)Angstrom, b = 16.234(2)Angstrom, c = 5.3717(6)Angstrom. Incomplete order of the oxygen vacancies is best described using the space group Icmm. The oxygen content can readily be varied to form Sr2MnGaO5 + delta (0 less than or equal to delta less than or equal to 0.5) to provide Mn oxidation states between Mn(III) and Mn(IV).
引用
收藏
页码:1324 / 1326
页数:3
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