Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/18193
Title: | Breaking the geometric magnetic frustration in controlled off-stoichiometric LuMn1+zO3+delta compounds |
Author: | Figueiras, F. G. Karpinsky, D. Tavares, P. B. Das, Soma Leitão, J. V. Bruck, E. H. Moreira, J. Agostinho Amaral, V. S. |
Issue Date: | Apr-2016 |
Publisher: | Royal Society of Chemistry |
Abstract: | This study explores controlled off-stoichiometric LuMn1+zO3+δ (|z| < 0.1) compounds, intended to retain the utter LuMnO3 intrinsic hexagonal symmetry and ferroelectric properties. X-ray powder diffraction measurements evidenced a single phase P63cm structure. Thermo-gravimetric experiments show a narrow impact of oxygen vacancies while a distinguishable gas exchange at ∼700 K, a surprisingly lower temperature when compared to perovskite systems. A comparison of different nominal ceramics revealed pertinent structural and magnetic property variations owing to subtle self-doping effects. Deviations from the archetypal antiferromagnetic state were detected below ∼90 K suggesting local rearrangements of the nominal Mn3+ ions matrix, breaking the ideal geometrical spin frustration, leading to a non-compensated magnetic structure. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/18193 |
DOI: | 10.1039/c6cp01562j |
ISSN: | 1463-9076 |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Breaking the geometric magnetic frustration in controlled off-stoichiometric LuMn1+zO3+delta compounds_10.1039c6cp01562j.pdf | 1.96 MB | Adobe PDF |
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