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(a) AFM micrograph of 4 u.c. LSMO, showing a clear step-and-terrace surface. The inset is RHEED intensity as a function of time for growth of 4 u.c. LSMO. (b) Temperature dependence of the magnetization of bare LSMO films with thickness of 3 u.c. and 20 u.c., respectively.
Magnetic hysteresis loops measured at 5 K after ±10 kOe FC, respectively. The loops are shifted toward the opposite direction of the cooling field.
Temperature dependence of the magnetization of 10 u.c. LSMO film with and without 2 nm Co capping layer, respectively. The diamagnetic contribution from SrTiO3 substrate has been subtracted. The red triangle symbols are obtained from the magnetization of 10 u.c. LSMO capped with 2 nm Co minus the magnetic contribution of Co capping layer (The magnetization of Co was measured from a Co (2 nm)/STO (001) sample.).
(a) Magnetic hysteresis loops of Co (2 nm)/LSMO (2 u.c.) bilayers measured at different temperatures. The inset shows the exchange field as a function of temperature. (b) Exchange bias field HE and coercive field Hc as a function of LSMO thickness with 2 nm Co capping layer. The lines are guide to the eyes.
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