The polycrystalline MO2's (HP-PdF2-type MO2, M = Rh, Os, Pt) with high-pressure PdF2 compounds were successfully synthesized under high-pressure conditions for the first time, to the best of our knowledge. The crystal structures and electromagneti...
Y. Shirako   H. Satsukawa   X. X. Wang   J. J. Li   Y. F. Guo   M. Arai   K. Yamaura   M. Yoshida   H. Kojitani   T. Katsumata   Y. Inaguma   K. Hiraki   T. Takahashi   M. Akaogi   
PHYSICAL REVIEW B 83(17) 2011年5月 [査読有り]
A quasi-one-dimensional magnetism was discovered in the post-perovskite CaRuO3 (Ru4+: 4d(4), Cmcm), which is isocompositional with the perovskite CaRuO3 (Pbnm). An antiferromagnetic (AFM) spin-chain function with -J/k(B) = 350 K reproduces the exp...
The crystal structure of the high-pressure Mg2Cr2O5 phase was studied by single-crystal X-ray diffraction (XRD) analysis for the recovered samples. The 61 parameters including anisotropic displacement parameters of each atom and site occupancies o...
We determined phase relations in FeCr2O4 at 12-28 GPa and 800-1600 degrees C using a multi-anvil apparatus. At 12-16 GPa, FeCr2O4 spinel (chromite) first dissociates into two phases: a new Fe2Cr2O5 phase + Cr2O3 with the corundum structure. At 17-...
PHYSICS OF THE EARTH AND PLANETARY INTERIORS 228 160-169 2014年3月
Phase transitions in NaZnF3 and NaMnF3 were examined up to 24 GPa and 1100 degrees C using a multianvil apparatus. NaZnE3 perovskite transforms to postperovskite above 11-16 GPa at 600-1000 degrees C, and the postperovskite is quenchable at ambien...
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 136(7) 2748-2756 2014年2月
A polar LiNbO3-type (LN-type) titanate ZnTiO3 has been successfully synthesized using ilmenite-type (IL-type) ZnTiO3 under high pressure and high temperature. The first principles calculation indicates that LN-type ZnTiO3 is a metastable phase obt...