Fig. 4
Effects of layer thickness on magnetic behaviors for LCO/LSMO/LCO trilayers. a Thermomagnetic curves of the LCO(6 nm)/LSMO(tLSMO)/LCO(6 nm) trilayers, collected in field-cooling mode with an in-plane (IP) and an out-of-plane (OP) applied field of 0.05 T, respectively; here, tLSMO takes a value between 3 and 15 nm. Shaded area corresponds to the energy required to orientate magnetic moment to hard axis. b Magnetic anisotropy energy as a function the layer thickness of LSMO. The linear Ktot – 1/tLSMO relation is a fingerprint of interfacial effect, where Ktot is decomposed into Kb and Ki, corresponding to the bulk and interface contributions, respectively. c The same as a, except for samples that are now LCO(tLCO)/LSMO(6 nm)/LCO(tLCO) with a tLCO ranging from 0.8 to 10 nm. d Magnetic anisotropy energy as a function of the layer thickness of LCO. Here, the data at 10 K were presented, simply because our measuring system is most easily thermally stabilized at this temperature
