Breaking the geometric magnetic frustration in controlled off-stoichiometric LuMn1+zO3+delta compounds
authors Figueiras, FG; Karpinsky, D; Tavares, PB; Das, S; Leitao, JV; Bruck, EH; Moreira, JA; Amaral, VS
nationality International
journal PHYSICAL CHEMISTRY CHEMICAL PHYSICS
keywords MULTIFERROIC HEXAGONAL MANGANITES; PEROVSKITES; LUMNO3; LU; DY; FERROELECTRICITY
abstract This study explores controlled off-stoichiometric LuMn1+zO3+delta (vertical bar z vertical bar < 0.1) compounds, intended to retain the utter LuMnO3 intrinsic hexagonal symmetry and ferroelectric properties. X-ray powder diffraction measurements evidenced a single phase P6(3)cm structure. Thermo-gravimetric experiments show a narrow impact of oxygen vacancies while a distinguishable gas exchange at similar to 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 similar to 90 K suggesting local rearrangements of the nominal Mn3+ ions matrix, breaking the ideal geometrical spin frustration, leading to a non-compensated magnetic structure.
publisher ROYAL SOC CHEMISTRY
issn 1463-9076
year published 2016
volume 18
issue 19
beginning page 13519
ending page 13523
digital object identifier (doi) 10.1039/c6cp01562j
web of science category Chemistry, Physical; Physics, Atomic, Molecular & Chemical
subject category Chemistry; Physics
unique article identifier WOS:000376138000042
  ciceco authors
  impact metrics
times cited (wos core): 1
journal impact factor (jcr 2016): 4.123
5 year journal impact factor (jcr 2016): 4.242
category normalized journal impact factor percentile (jcr 2016): 79.212
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