Sr7Co4(CO3)O13鈭捨?/sub> (未 = 1.64), An Original Cobaltite Derivative of the Ruddlesden鈥揚opper Series

详细信息    查看全文

• 作者：A. Demont ; D. Pelloquin ; S. H茅bert ; M. Hervieu ; J. H枚wing ; A. Maignan
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：May 6, 2013
• 年：2013
• 卷：52
• 期：9
• 页码：4977-4984
• 全文大小：444K
• 年卷期：v.52,no.9(May 6, 2013)
• ISSN：1520-510X

文摘

The oxycarbonate Sr₇Co₄(CO₃)O_11.36 exhibits a peculiar structure that has been characterized by combining transmission electron microscopy analyses and neutron diffraction. It consists of a regular intergrowth between the m = 2 and carbonated m = 3 members of the Sr_m+1Co_mO_3m+1 Ruddlesden鈥揚opper (RP) series, Sr₃Co₂O_5.87 and Sr₄Co₂(CO₃)O_5.49, respectively. A description of the structure is proposed to provide identification of the different building blocks. This material is semiconducting and presents a complex magnetic behavior, characteristic of what is observed for the RP² or RP³ series, with a cobalt valency close to 2.7.