title: Confinement in carbon nanospace-induced production of KI nanocrystals of high-pressure phase.
abstract: An outstanding compression function for materials preparation exhibited by nanospaces of single-walled carbon nanohorns (SWCNHs) was studied using the B1-to-B2 solid phase transition of KI crystals at 1.9 GPa. High-resolution transmission electron microscopy and synchrotron X-ray diffraction examinations provided evidence that KI nanocrystals doped in the nanotube spaces of SWCNHs at pressures below 0.1 MPa had the super-high-pressure B2 phase structure, which is induced at pressures above 1.9 GPa in bulk KI crystals. This finding of the supercompression function of the carbon nanotubular spaces can lead to the development of a new compression-free route to precious materials whose syntheses require the application of high pressure.
authors.affiliation: Department of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
authors.forename: Koki
authors.initials: K
authors.lastname: Urita
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Shiga
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Fujimori
authors.forename: Taku
authors.initials: T
authors.lastname: Iiyama
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Hattori
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Kanoh
authors.forename: Tomonori
authors.initials: T
authors.lastname: Ohba
authors.forename: Hideki
authors.initials: H
authors.lastname: Tanaka
authors.forename: Masako
authors.initials: M
authors.lastname: Yudasaka
authors.forename: Sumio
authors.initials: S
authors.lastname: Iijima
authors.forename: Isamu
authors.initials: I
authors.lastname: Moriguchi
authors.forename: Fujio
authors.initials: F
authors.lastname: Okino
authors.forename: Morinobu
authors.initials: M
authors.lastname: Endo
authors.forename: Katsumi
authors.initials: K
authors.lastname: Kaneko