In this study, we have investigated the photothermal-energy-transfer-based temperature rise in a ferrimagnetic Bi0.8Dy2.2Fe4.3Al0.7O12 thin film, followed by heat-dissipation-based temperature lowering. A novel method using nanosecond transient absorption spectroscopy is proposed for observing the photothermal energy transfer and heat dissipation. This approach would be useful for developing various types of photofunctional organic-inorganic hybrid materials. (C) 2018 Elsevier B.V. All rights reserved.