All Stories

  1. Novel catalytic properties of quadruple perovskites

    Article • Science and Technology of Advanced Materials, July 2017, Taylor & Francis

    Dr Ikuya Yamada

  2. Covalency Competition in the Quadruple Perovskite CdCu3Fe4O12

    Article • Inorganic Chemistry, July 2017, American Chemical Society (ACS)

    Dr Ikuya Yamada

  3. Structural and electronic transformations in quadruple iron perovskite Ca1−xSrxCu3Fe4O12

    Article • Journal of Asian Ceramic Societies, June 2017, Taylor & Francis

    Dr Ikuya Yamada

  4. A-Site and B-Site Charge Orderings in an s–d Level Controlled Perovskite Oxide PbCoO3

    Article • Journal of the American Chemical Society, March 2017, American Chemical Society (ACS)

    Dr Ikuya Yamada

  5. Bifunctional Oxygen Reaction Catalysis of Quadruple Manganese Perovskites

    Article • Advanced Materials, November 2016, Wiley

    Dr Ikuya Yamada

  6. LiNbO3-Type InFeO3: Room-Temperature Polar Magnet without Second-Order Jahn–Teller Active Ions

    Article • Chemistry of Materials, September 2016, American Chemical Society (ACS)

    Dr Ikuya Yamada

  7. On the energy scale involved in the metal to insulator transition of quadruple perovskite EuCu3Fe4O12: infrared spectroscopy and ab-initio calculations

    Article • Scientific Reports, June 2016, Nature

    Dr Ikuya Yamada

  8. Two-Step Suppression of Charge Disproportionation in CaCu3Fe4O12under High Pressure

    Article • Journal of the Physical Society of Japan, March 2016, Physical Society of Japan

    Dr Ikuya Yamada

  9. Inverse Charge Transfer in the Quadruple Perovskite CaCu3Fe4O12

    Article • Inorganic Chemistry, February 2016, American Chemical Society (ACS)

    Dr Ikuya Yamada

  10. High-Pressure Synthesis of Novel Oxygen Evolution Catalysts

    Article • The Review of High Pressure Science and Technology, January 2016, The Japan Society of High Pressure Science and Technology

    Dr Ikuya Yamada

  11. Magnetic properties of quadruple perovskite solid solutions Ca1–xYxCu3Fe4O12 and Y1–yCexCu3Fe4O12

    Article • January 2016, American Institute of Physics

    Dr Ikuya Yamada

  12. First-principles calculations of the OH− adsorption energy on perovskite oxide

    Article • January 2016, American Institute of Physics

    Dr Ikuya Yamada

  13. Neutron diffraction study of quadruple perovskite SrCu3Fe3O12

    Article • January 2016, American Institute of Physics

    Dr Ikuya Yamada

  14. Covalency-reinforced oxygen evolution reaction catalyst

    Article • Nature Communications, September 2015, Nature

    Dr Ikuya Yamada

  15. Rattling in the Quadruple Perovskite CuCu3V4O12

    Article • Angewandte Chemie International Edition, July 2015, Wiley

    Dr Ikuya Yamada

  16. Magnetic Properties of Shandite-Phase Co3−xFexSn2S2(x= 0–1.0) Obtained with High Pressure Synthesis

    Article • Journal of the Physical Society of Japan, April 2015, Physical Society of Japan

    Dr Ikuya Yamada

  17. Room-temperature zero thermal expansion in a cubic perovskite oxide SrCu3Fe4−xMnxO12

    Article • Applied Physics Letters, April 2015, American Institute of Physics

    Dr Ikuya Yamada

  18. Erratum: “Synthesis of Binary Magnesium–Transition Metal Oxides via Inverse Coprecipitation”

    Article • Japanese Journal of Applied Physics, February 2015, Japan Society of Applied Physics

    Professor Tetsu Ichitsubo, Dr Ikuya Yamada

  19. Phase Relations among D03, α-Mg, and Long-Period Stacking Orders in Mg85Zn6Y9 Alloy under 3 GPa

    Article • MATERIALS TRANSACTIONS, January 2015, Japan Institute of Metals

    Dr Ikuya Yamada

  20. “True” negative thermal expansion in Mn-doped LaCu3Fe4O12 perovskite oxides

    Article • Applied Physics Letters, December 2014, American Institute of Physics

    Dr Ikuya Yamada

  21. Room-Temperature Polar Ferromagnet ScFeO3Transformed from a High-Pressure Orthorhombic Perovskite Phase

    Article • Journal of the American Chemical Society, October 2014, American Chemical Society (ACS)

    Dr Ikuya Yamada

  22. Charge-Order Melting in Charge-Disproportionated Perovskite CeCu3Fe4O12

    Article • Inorganic Chemistry, October 2014, American Chemical Society (ACS)

    Dr Ikuya Yamada

  23. Erratum: Synthesis of Binary Magnesium–Transition Metal Oxides via Inverse Coprecipitation

    Article • Japanese Journal of Applied Physics, October 2014, Japan Society of Applied Physics

    Professor Tetsu Ichitsubo, Dr Ikuya Yamada

  24. Valence Transitions in Negative Thermal Expansion Material SrCu3Fe4O12

    Article • Inorganic Chemistry, October 2014, American Chemical Society (ACS)

    Dr Ikuya Yamada

  25. New phases of binary compounds: CsCl-type RuGe and RuSn

    Article • EPL (Europhysics Letters), September 2014, Institute of Physics Publishing

    Dr Ikuya Yamada

  26. High-Pressure Synthesis, Crystal Structure, and Unusual Valence State of Novel Perovskite Oxide CaCu3Rh4O12

    Article • Inorganic Chemistry, July 2014, American Chemical Society (ACS)

    Dr Ikuya Yamada

  27. Room-Temperature Pressure-Induced Nanostructural CuInTe2Thermoelectric Material with Low Thermal Conductivity

    Article • Inorganic Chemistry, July 2014, American Chemical Society (ACS)

    Dr Ikuya Yamada

  28. High-pressure synthesis of BaVO3: A new cubic perovskite

    Article • Journal of Physics and Chemistry of Solids, June 2014, Elsevier

    Dr Ikuya Yamada

  29. High-pressure synthesis, electronic states, and structure^|^ndash;property relationships of perovskite oxides, ACu3Fe4O12 (A: divalent alkaline earth or trivalent rare-earth ion)

    Article • Journal of the Ceramic Society of Japan, January 2014, Ceramic Society of Japan

    Dr Ikuya Yamada

  30. Raman study of ACu3Fe4O12 (A = Ca, Sr, Y and Eu)

    Article • Solid State Sciences, January 2014, Elsevier

    Dr Ikuya Yamada

  31. AgCu3V4O12: a Novel Perovskite Containing Mixed-Valence Silver ions

    Article • Inorganic Chemistry, December 2013, American Chemical Society (ACS)

    Dr Ikuya Yamada

  32. Control of Bond-Strain-Induced Electronic Phase Transitions in Iron Perovskites

    Article • Inorganic Chemistry, December 2013, American Chemical Society (ACS)

    Dr Ikuya Yamada

  33. A-Site-Ordered Perovskite MnCu3V4O12with a 12-Coordinated Manganese(II)

    Article • Inorganic Chemistry, October 2013, American Chemical Society (ACS)

    Dr Ikuya Yamada

  34. NMR study of successive magnetic transitions in the A-site ordered perovskite LaMn3Cr4O12

    Article • Journal of the Korean Physical Society, August 2013, Korean Physical Society

    Dr Ikuya Yamada

  35. Phonon anomalies and lattice dynamics in the superconducting oxychlorides Ca 2 − x CuO 2 Cl 2

    Article • Physical Review B, July 2013, American Physical Society (APS)

    Dr Ikuya Yamada

  36. Cu NQR and NMR Studies of Optimally Doped Ca2-xNaxCuO2Cl2

    Article • Journal of the Physical Society of Japan, May 2013, Physical Society of Japan

    Dr Ikuya Yamada

  37. Suppression of Intersite Charge Transfer in Charge-Disproportionated Perovskite YCu3Fe4O12

    Article • Journal of the American Chemical Society, April 2013, American Chemical Society (ACS)

    Dr Ikuya Yamada

  38. B-Site Deficiencies inA-site-Ordered Perovskite LaCu3Pt3.75O12

    Article • Inorganic Chemistry, April 2013, American Chemical Society (ACS)

    Dr Ikuya Yamada

  39. Synthesis of Binary Magnesium–Transition Metal Oxides via Inverse Coprecipitation

    Article • Japanese Journal of Applied Physics, February 2013, Institute of Physics Publishing

    Professor Tetsu Ichitsubo, Dr Ikuya Yamada

  40. Pd2+-Incorporated Perovskite CaPd3B4O12 (B = Ti, V)

    Article • Inorganic Chemistry, January 2013, American Chemical Society (ACS)

    Dr Ikuya Yamada

  41. Direct observation of negative thermal expansion in SrCu3Fe4O12

    Article • Journal of the Ceramic Society of Japan, January 2013, Ceramic Society of Japan

    Dr Ikuya Yamada

  42. High-Pressure Synthesis of Novel Transition Metal Oxides Containing Unusual High Valence Ions

    Article • The Review of High Pressure Science and Technology, January 2013, The Japan Society of High Pressure Science and Technology

    Dr Ikuya Yamada

  43. Morphology and dispersion control of titania–silica monolith with macro–meso pore system

    Article • Journal of Sol-Gel Science and Technology, October 2012, Springer Science + Business Media

    Dr Ikuya Yamada

  44. High pressure synthesis at 10 GPa and 1400 K using a small cubic anvil apparatus with a multi-anvil 6-6 system

    Article • High Pressure Research, September 2012, Taylor & Francis

    Dr Ikuya Yamada

  45. Erratum to “Volume and structural study of Fe64Mn36 anti-ferromagnetic Invar alloy under high pressure” [J. Magn. Magn. Mater. 323 (6) (2011) 838–841]

    Article • Journal of Magnetism and Magnetic Materials, February 2012, Elsevier

    Dr Ikuya Yamada

  46. Suppression of geometric frustration by magnetoelastic coupling in AuCrS 2

    Article • Physical Review B, September 2011, American Physical Society (APS)

    Dr Ikuya Yamada

  47. Direct observation of the ferrimagnetic coupling of A -site Cu and B -site Fe spins in charge-disproportionated CaCu 3 Fe 4 O 12

    Article • Physical Review B, September 2011, American Physical Society (APS)

    Dr Ikuya Yamada

  48. Giant Negative Thermal Expansion in the Iron Perovskite SrCu3Fe4O12

    Article • Angewandte Chemie International Edition, June 2011, Wiley

    Dr Ikuya Yamada

  49. Volume and structural study of Fe64Mn36 anti-ferromagnetic Invar alloy under high pressure

    Article • Journal of Magnetism and Magnetic Materials, March 2011, Elsevier

    Dr Ikuya Yamada

  50. Synthesis, Structure, and Physical Properties of A -site Ordered Perovskites A Cu 3 Co 4 O 12 ( A = Ca and Y)

    Article • Chemistry of Materials, September 2010, American Chemical Society (ACS)

    Professor Ichiro Terasaki, Dr Ikuya Yamada

  51. CaCu3Pt4O12: The First Perovskite with the B Site Fully Occupied by Pt4+

    Article • Inorganic Chemistry, August 2010, American Chemical Society (ACS)

    Dr Ikuya Yamada

  52. Sol–gel preparation of Ni/TiO2 catalysts with bimodal pore structures

    Article • Applied Catalysis A General, July 2010, Elsevier

    Dr Ikuya Yamada

  53. Synthesis of 3-buten-1-ol from 1,4-butanediol over indium oxide

    Article • Applied Catalysis A General, July 2010, Elsevier

    Dr Ikuya Yamada

  54. Multiple pre-edge structures in Cu K -edge x-ray absorption spectra of high- T c cuprates revealed by high-resolution x-ray absorption spectroscopy

    Article • Physical Review B, June 2010, American Physical Society (APS)

    Dr Ikuya Yamada

  55. Incommensurate spin correlations induced by magnetic Fe ions substituted into overdoped Bi 1.75 Pb 0.35 Sr 1.90 CuO 6 + z

    Article • Physical Review B, April 2010, American Physical Society (APS)

    Dr Ikuya Yamada

  56. Metallic versus insulating behavior in the A -site ordered perovskite oxides A Cu 3 Co 4 O 12 ( A = Ca and Y) controlled by Mott and Zhang-Rice physics

    Article • Physical Review B, September 2009, American Physical Society (APS)

    Dr Ikuya Yamada

  57. First-principles study of defect-induced potentials inCa2CuO2Cl2

    Article • Physical Review B, August 2009, American Physical Society (APS)

    Dr Ikuya Yamada

  58. Effect of Zn substitution for Cu on near the hole concentration of per Cu

    Article • Physica B Condensed Matter, April 2009, Elsevier

    Dr Ikuya Yamada

  59. Coherence Factors in a High-Tc Cuprate Probed by Quasi-Particle Scattering Off Vortices

    Article • Science, February 2009, American Association for the Advancement of Science

    Dr Ikuya Yamada

  60. A Perovskite Containing Quadrivalent Iron as a Charge-Disproportionated Ferrimagnet

    Article • Angewandte Chemie International Edition, September 2008, Wiley

    Dr Ikuya Yamada

  61. Magnetic Ground-State of Perovskite PbVO 3 with Large Tetragonal Distortion

    Article • Inorganic Chemistry, August 2008, American Chemical Society (ACS)

    Dr Ikuya Yamada

  62. Quasiparticle interference and superconducting gap in Ca2−xNaxCuO2Cl2

    Article • Nature Physics, October 2007, Nature

    Dr Ikuya Yamada

  63. Low-energy spectroscopic mapping studies in optimally-doped Ca2−xNaxCuO2Cl2

    Article • Physica C Superconductivity, September 2007, Elsevier

    Dr Ikuya Yamada

  64. Single crystal growth of A-site deficient superconductor Ca2−xCuO2Cl2

    Article • Physica C Superconductivity, September 2007, Elsevier

    Dr Ikuya Yamada

  65. Magnetoresistance and electronic structure of the half-metallic ferrimagnetBiCu3Mn4O12

    Article • Physical Review B, July 2007, American Physical Society (APS)

    Dr Ikuya Yamada

  66. Single-layer oxychloride superconductor Ca 2 − x CuO 2 Cl 2 with A -site cation deficiency

    Article • Physical Review B, December 2005, American Physical Society (APS)

    Dr Ikuya Yamada

  67. Magnetic Phase Diagram of Hole-Doped Ca 2- x Na x CuO 2 Cl 2 Cuprate Superconductor

    Article • Journal of the Physical Society of Japan, September 2005, Physical Society of Japan

    Dr Ikuya Yamada

  68. Superconductivity at 38 K in the single layer oxychloride without cation substitution

    Article • Physica C Superconductivity, October 2004, Elsevier

    Dr Ikuya Yamada

  69. Single crystal growth of transition metal oxides at high pressures of several GPa

    Article • Physica C Superconductivity, October 2003, Elsevier

    Dr Ikuya Yamada

  70. Article • Journal of Low Temperature Physics, January 2003, Springer Science + Business Media

    Dr Ikuya Yamada

  71. Growth of Na-Doped Ca2CuO2Cl2Single Crystals under High Pressures of Several GPa

    Article • Journal of the American Chemical Society, October 2002, American Chemical Society (ACS)

    Dr Ikuya Yamada