RT Journal Article
T1 Thermal expansion in BaRuO3 perovskites–an unusual case of bond strengthening at high temperatures
A1 Kayser González, Paula
A1 Injac, Sean
A1 Kennedy, Brendan
A1 Menezes de Oliveira, Andre
A1 Shirako, Yuichi
A1 Hasegawa, Masashi
AB The temperature dependences of the structures of three polytypes of BaRuO3 have been investigated between room temperature and 1000 °C using high resolution synchrotron X-ray diffraction. The structural studies reveal a systematic decrease of the Ru–Ru distance as the pressure required to prepare the polytype increases. The O–O distance across the shared face increases as the Ru–Ru separation decreases. The 9R and 4H polytypes undergo unexceptional changes with increasing temperature. In 6H-BaRuO3 there is an apparent increase in the Ru–Ru interaction at around 650 °C and a concurrent reduction in the O–O distance, indicating an anomalous strengthening of the Ru–Ru interactions upon heating.
PB Royal Society of Chemistry
SN 1477-9234
YR 2017
FD 2017
LK https://hdl.handle.net/20.500.14352/95474
UL https://hdl.handle.net/20.500.14352/95474
LA eng
NO Kayser, Paula, et al. «Thermal Expansion in BaRuO 3 Perovskites – an Unusual Case of Bond Strengthening at High Temperatures». Dalton Transactions, vol. 46, n.o 9, 2017, pp. 2974-80. https://doi.org/10.1039/C6DT04473E.
NO Australian Research Council
DS Docta Complutense
RD 22 abr 2025