Metastability in the resistance of polycrystalline La0.8Li0.2MnO3
Bulk polycrystalline La0.8Li0.2MnO3 is found to switch between a low-resistance state and a high-resistance state on thermal cycling. The low-temperature, high-resistance state exhibits strong electroresistance whereas the high-temperature, low-resistance state does not. The change in resistance between the two distinct states is of two orders of magnitude. It is proposed that the observed metastability may serve as the basis for resistive thermal-switching devices.