Synthesis and magnetic and charge-transport properties of the correlated 4d post-perovskite CaRhO3.
A high-quality polycrystalline sample of the correlated 4d post-perovskite CaRhO(3) (Rh(4+): 4d(5), S(el) = 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 approximately 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.
Yamaura
Kazunari
K
Superconducting Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. YAMAURA.Kazunari@nims.go.jp
Shirako
Yuichi
Y
Kojitani
Hiroshi
H
Arai
Masao
M
Young
David P
DP
Akaogi
Masaki
M
Nakashima
Mamoru
M
Katsumata
Tetsuhiro
T
Inaguma
Yoshiyuki
Y
Takayama-Muromachi
Eiji
E