A HRTEM study of the Ruddlesden-Popper compositions Sr{sub 2}LnMn{sub 2}O{sub 7} (Ln = Y, La, Nd, Eu, Ho)
Journal Article
·
· Journal of Solid State Chemistry
- Univ. of Oxford (United Kingdom)
High resolution transmission electron microscopy has been used to probe the microstructure of the n = 2 Ruddlesden-Popper manganates Sr{sub 2}LnMn{sub 2}O{sub 7} (Ln = Y, La, Nd, Eu, Ho). Intergrowths of n = 1 (K{sub 2}NiF{sub 4}) are observed only for Ln = La. Intergrowths with n {ge} 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.
- OSTI ID:
- 642228
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 138; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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