A HRTEM study of the Ruddlesden-Popper compositions Sr2LMn2O7 (Ln = Y, La, Nd, Eu, Ho)

被引：45

作者：

Sloan, J

Battle, PD

Green, MA

Rosseinsky, MJ

Vente, JF

机构：

[1] Univ Oxford, Inorgan Chem Lab, Oxford OX1 3QR, England

[2] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1998年 / 138卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1006/jssc.1998.7764

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

High resolution transmission electron microscopy has been used to probe the microstructure of the n = 2 Ruddlesden-Popper manganates Sr(2)LnMn(2)O(7) (Ln = Y, La, Nd, Eu, Ho). Intergrowths of n = 1 (K2NiF4) are observed only for Ln = La. Intergrowths with n greater than or equal to 5, essentially perovskite microdomains, are seen in the other compositions. The density of perovskite regions is greatest near the edges of the thin specimens, with the n = 2 structure becoming established in the bulk. The complementarity of HRTEM and neutron diffraction is discussed. (C) 1998 Academic Press.

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页码：135 / 140

页数：6

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