A HRTEM STUDY OF THE RUDDLESDEN-POPPER COMPOSITIONS SR2LMN2O7 (LN = Y, LA, ND, EU, HO)

Authors
SLOAN J BATTLE PD GREEN MA ROSSEINSKY MJ VENTE JF
Citation
J. Sloan et al., A HRTEM STUDY OF THE RUDDLESDEN-POPPER COMPOSITIONS SR2LMN2O7 (LN = Y, LA, ND, EU, HO), Journal of solid state chemistry (Print), 138(1), 1998, pp. 135-140
Citations number
22
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Physical
Journal title
Journal of solid state chemistry (Print) → ACNP
ISSN journal
00224596
Volume
138
Issue
1
Year of publication
1998
Pages
135 - 140
Database
ISI
SICI code
0022-4596(1998)138:1<135:AHSOTR>2.0.ZU;2-V
Abstract
High resolution transmission electron microscopy has been used to prob e the microstructure of the n = 2 Ruddlesden-Popper manganates Sr(2)Ln Mn(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 compo sitions. The density of perovskite regions is greatest near the edges of the thin specimens, with the n = 2 structure becoming established i n the bulk. The complementarity of HRTEM and neutron diffraction is di scussed. (C) 1998 Academic Press.