title: Synthesis and magnetic and charge-transport properties of the correlated 4d post-perovskite CaRhO3.
abstract: 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.
authors.affiliation: Superconducting Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. YAMAURA.Kazunari@nims.go.jp
authors.forename: Kazunari
authors.initials: K
authors.lastname: Yamaura
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Shirako
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kojitani
authors.forename: Masao
authors.initials: M
authors.lastname: Arai
authors.forename: David P
authors.initials: DP
authors.lastname: Young
authors.forename: Masaki
authors.initials: M
authors.lastname: Akaogi
authors.forename: Mamoru
authors.initials: M
authors.lastname: Nakashima
authors.forename: Tetsuhiro
authors.initials: T
authors.lastname: Katsumata
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Inaguma
authors.forename: Eiji
authors.initials: E
authors.lastname: Takayama-Muromachi