Strong optical absorption of LaMn0.6Al0.4O3 thin films in the mid-infrared atmospheric window
Abstract
Strong light absorption in the mid-infrared atmosphere window (3–5 μm) was reported for a complete (100)-oriented LaMn0.6Al0.4O3 thin film. It is attributed to Al-doping induced electron transitions from the polar center of a [MnO610−]JT pseudo-Jahn–Teller electron cluster to a [MnO68−]JT pseudo-Jahn–Teller hole cluster and strain intensification.