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Terada, Noriki*; Khalyavin, D. D.*; Manuel, P.*; Osakabe, Toyotaka; Radaelli, P. G.*; Kitazawa, Hideaki*
Physical Review B, 89(22), p.220403_1 - 220403_6, 2014/06
Times Cited Count：30 Percentile：72.57(Materials Science, Multidisciplinary)We have studied the pressure effect on the magnetic orderings in the strongly frustrated antiferromagnet CuFeO, by using neutron diffraction experiments under hydrostatic pressure. The main result is elucidation of the pressure-temperature magnetic phase diagram, consisting of the fourmagnetic phases including two polar ones. In particular, in the 3 GPa 
P 4 GPa pressure range, the ICM2 phase with the proper screw magnetic ordering stabilized. This polar phase is almost identical to the ferroelectric incommensurate (FEIC) phase induced by either a magnetic field or chemical doping. Furthermore, above 4 GPa, a new low-symmetry phase ICM3 is realized. This is unique for the family of delafossite multiferroics and implies an admixture of both cycloidal and proper screw spin configurations. The sequence of the observed magnetic phases with changing pressure might be attributed to pressure suppression of the monoclinic lattice distortions responsible for releasing the spin frustration in the system.
Konishi, Hiroyuki; Yamashita, Masato*; Uchida, Hitoshi*; Mizuki, Junichiro
Materials Transactions, 46(2), p.337 - 341, 2005/02
Times Cited Count：11 Percentile：60.23(Materials Science, Multidisciplinary)We have performed extended X-ray absorption fine structure (EXAFS) analysis for artificial Cr-goethite to elucidate the local structure around Cr in Cr-goethite. The spectra were obtained using synchrotron radiation X-rays at the Photon Factory in Tsukuba. The first shell contributions were isolated by Fourier filtering the EXAFS data, and the inverse Fourier transformed single-shell data were analyzed using curve fitting method. The results show that Cr is coordinated with (7
1) O
ions. The protective character of Cr-goethite protective rust layer on weathering steel can be interpreted in terms of the O coordination around Cr
resulting in creation of negative fixed-charge in the Cr-goethite particles.
Cs and 
Co in slag made from non-metallic radioactive wastesNakashima, Mikio; Nakashio, Nobuyuki; Kameo, Yutaka; Fukui, Toshiki*; Isobe, Motoyasu*; Otake, Atsushi*; Wakui, Takuji*; Hirabayashi, Takakuni*
Radiochimica Acta, 91(1), p.45 - 51, 2003/01
Times Cited Count：2 Percentile：18.28(Chemistry, Inorganic & Nuclear)no abstracts in English
Fukui, Toshiki; Nakashio, Nobuyuki; Isobe, Motoyasu; Otake, Atsushi*; Wakui, Takuji*; Hirabayashi, Takakuni*; Nakashima, Mikio
JAERI-Review 2000-033, 82 Pages, 2001/02
JAERI-Review-2000-033.pdf:2.61MB
no abstracts in English
; Nagano, Tetsushi; Muraoka, Susumu
Hoshasei Haikibutsu Kenkyu Renrakukai Rombunshu (VI), p.53 - 63, 1991/00
no abstracts in English
-LiFeOAratono, Yasuyuki; Sagawa, Chiaki; Nakashima, Mikio; Saeki, Masakatsu;
Chemistry Letters, 1990, p.35 - 38, 1990/00
no abstracts in English
; Tachikawa, Enzo; ; ;
Journal of Nuclear Science and Technology, 24(4), p.297 - 307, 1987/04
Times Cited Count：4 Percentile：44.48(Nuclear Science & Technology)no abstracts in English
O in static helium gas environmentKurasawa, T.; ;
J. Nucl. Mater., 92(1), p.67 - 72, 1980/00
Times Cited Count：5 Percentile：53.19(Materials Science, Multidisciplinary)no abstracts in English
O pelletsKurasawa, T.; ; ; ; ;
J. Nucl. Mater., 80(1), p.48 - 56, 1979/00
Times Cited Count：13no abstracts in English
FeO
as a corrosion product in the compatibility experiment of LiO pellets with Fe-Ni-Cr alloys; ; ; ; ;
J. Nucl. Mater., 78(2), p.281 - 288, 1978/00
Times Cited Count：18no abstracts in English
