Ferrite Sr3NdFe3O9: An Original Intergrowth between the Brownmillerite and K2NiF4-type Structures

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• 作者：N. Barrier ; D. Pelloquin ; N. Nguyen ; M. Giot ; F. Bour&eacute ; e ; and B. Raveau
• 刊名：Chemistry of Materials
• 出版年：2005
• 出版时间：December 27, 2005
• 年：2005
• 卷：17
• 期：26
• 页码：6619 - 6623
• 全文大小：283K
• 年卷期：v.17,no.26(December 27, 2005)
• ISSN：1520-5002

文摘

The coupled neutron diffraction and Mossbaüer study of the layered oxide Sr₃NdFe₃O₉ shows for thefirst time the possibility of anionic vacancies ordering in an oxygen-deficient related Ruddlesden-Popper-(RP-) type ferrite leading to an original intergrowth of brownmillerite and K₂NiF₄-type layers. Theantiferromagnetic properties of this phase up to 500 K are also evidenced. These results open the routeto the synthesis of new members in the series (Sr₂Fe₂O₅)_n·SrLnFeO₄ and to the understanding of theirreactivity with atmospheric water.