Abstract
This study demonstrates the effect of a Ca substituent for Sr on the structural, chemical, and electrical properties in La0.7Sr0.3−xCaxMnO3 perovskite manganite films. The structural modification of films was found to be affected by the amount of Ca substituent. Raman spectroscopy analysis reveals a decrease of bond angle and an increase of Jahn–Teller type distortion in MnO6 octahedra with increasing Ca. The resistance value of high resistance state, switching voltage and resistive switching ratio of La0.7Sr0.3−xCaxMnO3 films decreased with increasing amounts of Ca substituent. The relationships among structural, interfacial, and electrical properties including resistive switching behaviour of La0.7Sr0.3−xCaxMnO3 were examined.
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