Synthesis and magnetic and charge-transport properties of the correlated 4d post-perovskite CaRhO 3
A high-quality polycrystalline sample of the correlated 4d post-perovskite CaRhO 3 (Rh 4+:4d 5, S e = 1/2) was attained under a moderate pressure of 6 GPa. Since the post-perovskite is quenchable at ambient pressure/temperature, it can be a valuable analogue of the post-perovskite MgSiO 3 (stable higher than 120 GPa and unstable at ambient pressure), which is a significant key material in earth science. The sample was subjected for measurements of charge-transport and magnetic properties. The data clearly indicate it goes into an antiferromagnetically ordered state below ∼90 K in an unusual way, in striking contrast to what was observed for the perovskite phase. The post-perovskite CaRhO 3 offers future opportunities for correlated electrons science as well as earth science. © 2009 American Chemical Society.
Publication Source (Journal or Book title)
Journal of the American Chemical Society
Yamaura, K., Shirako, Y., Kojitani, H., Arai, M., Young, D., Akaogi, M., Nakashima, M., Katsumata, T., Inaguma, Y., & Takayama-Muromachi, E. (2009). Synthesis and magnetic and charge-transport properties of the correlated 4d post-perovskite CaRhO 3. Journal of the American Chemical Society, 131 (7), 2722-2726. https://doi.org/10.1021/ja8091906