화학공학소재연구정보센터
Materials Chemistry and Physics, Vol.180, 390-395, 2016
Planar Nernst and Hall effect in patterned ultrathin film of La0.7Sr0.3MnO3
We present the observation of transverse thermopower, or planar Nernst Effect (PNE), and planar Hall Effect (PHE) in patterned ultrathin film (similar to 8 nm) of La0.7Sr0.3MnO3 (LSMO). For PNE, a heat current was applied in-plane of the film (by creating a temperature gradient del T) whereas an in-plane current of 100 mu A was applied for measuring PHE. Even for a temperature difference of Delta T = 5 K the planar Nernst effect in LCMO ultrathin film (similar to 8 nm) shows a coercivity of similar to 3 Oe and confirms the ferromagnetic nature of the thin film. The angular dependence of transverse voltage in PNE shows a four-fold sin theta cos theta dependence symmetry at 250 K, which is consistent with the planar Hall effect measurement. (C) 2016 Elsevier B.V. All rights reserved.