Abstract
The thermal diffusivity and thermal conductivity of Bi1-xHoxFeO3 multiferroics (x = 0-0.20) were studied in the high-temperature range 300-1200K. It has been established that alloying with rare earth element with holmium leads to a noticeable increase in heat capacity in a wide temperature range T> 300 K and to a significant change in the temperature anomalies of thermal diffusion and thermal conductivity of the phase transition region. The dominant mechanisms of phonon heat transfer in the region of ferroelectric and antiferromagnetic phase transitions are considered. The dependence of the mean free path on temperature has been determined. Research results are discussed in conjunction with structural studies.
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