Low-Temperature Heat Capacity of CsPbI3, Cs4PbI6, and Cs3Bi2I9

Journal article (2023)

Authors

A. van Hattem RST/Reactor Physics and Nuclear Materials - AS
Jean Christophe Griveau European Commission Joint Research Centre
Eric Colineau European Commission Joint Research Centre
A.J.E. Lefering RST/Fundamental Aspects of Materials and Energy - AS
R. Konings RST/Reactor Physics and Nuclear Materials - AS
A.L. Smith RST/Reactor Physics and Nuclear Materials - AS
Research Group
RST/Reactor Physics and Nuclear Materials (AS) (TU Delft)
Copyright: © 2023 A. van Hattem, Jean Christophe Griveau, Eric Colineau, A.J.E. Lefering, R. Konings, A.L. Smith
DOI: https://doi.org/10.1021/acs.jpcc.3c05846
More Info
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Published Date

2023

Language

English

Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Reactor Physics and Nuclear Materials

Abstract

The heat capacities of CsPbI3, Cs4PbI6, and Cs3Bi2I9 were studied using low-temperature thermal relaxation calorimetry in the temperature range of 1.9-300 K. The three compounds are insulators, with no electronic contribution to the heat capacity. None of them show detectable anomalies in the studied temperature window. Thermodynamic properties at standard conditions are derived. Previously reported results on Cs3Bi2I9 are not fully consistent with the present findings. Moreover, the magnetic susceptibilities of the three title compounds were measured.