Our group aims to develop low temperature synthesis routes to new inorganic materials. Low temperature reactions typically yield products of predictable structure. We utilize these methods to rationally design various new materials with ultimate applications in superconductivity, magnetism, dielectrics, catalysis, and other interesting fields.

Hiroshi Kageyama Group

陰山研究室
陰山研究室
kageyamalab
kageyamalab

Welcome! We are a newly independent group since January, 2010, specializing in solid state chemistry. As a new group, we are constantly looking for a diverse set of new members. We have extensive experience with collaborations overseas in Europe and the United States, and regularly host visitors and students from a variety of backgrounds. Please inquire freely about openings in the group.

Research Concept

Designing Oxides via Low Temperature Synthesis

Generally, the designed synthesis of oxides is difficult under high temperatures. We plan to circumvent this problem by developing a toolbox of low-temperature reactions instead.

The reduction of the simple compound SrFeO3 shown on the right illustrates one of our approaches (2007). In the movie on the right, oxygen anions (red spheres) are removed in an orderly manner from SrFeO3 to form SrFeO2, resulting in a structure composed of square planar FeO4 units. This is highly unusual, given that iron is generally known to adopt only tetrahedral or octahedral coordination. The fact that such a novel geometry comes from such a simple method and composition is a testament to the wide range of possibilities of these low-temperature synthesis techniques.


BTOH

Hydrogen moves! Seemingly bouncing around, hydride (H-; white spheres) can exist quite comfortably in simple oxides such as BaTiO3, and furthermore diffuse throughout the lattice.

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2016/4/27
Seminar Dr. S. M. Yusuf (Bhabha Atomic Research Center, India), "Basic Understanding of Magnetization Reversal Phenomenon and Its Practical Implications", A2-307; 13:00〜
2016/3
Lecture by Prof. Olivier Hernandez (Univ. Rennes 1, France), "Advanced structural analyses by X-ray/neutron diffraction/total scattering", A2-302, 10:00~12:00 (3/10), 10:00~12:00 (3/11)
2016/1/29
Seminar by Prof. Tanusri Saha-Dasgupta (S.N.Bose National Centre for Basic Sciences, India), "Electronic Structure of Double Perovskites: Compounds with Promises", A2-303, 14:00
2016/1/29
Seminar by Prof. Kenneth Poeppelmeier (Northwestern Univ., USA), "Reimagine the Possible: Accelerating Materials Discovery ", A2-303, 16:00
2015/10/24
Seminar by Prof. Nic Shannon (Okinawa Institute of Science and Technology), "Quantum water ice", A2-123, 16:00
2015/10/20
Seminar by Prof. Paul Attfield (University of Edinburgh), "New Orders in Simple Solids", A2-308, 10:30
2015/6/24
Seminar by Prof. Aron Walsh (University of Bath), "Emerging materials for solar energy: herzenbergite, kesterite,perovskite and beyond", A2-308, 16:30
2015/2/27
Seminar by Prof. Henrik Ronnow (EPFL), "Quantum Magnetism - neutrons in the quasi-particle zoo", A2-308, 14:00PM
2015/2
Seminar by Prof. David C. Johnson (Univ. Oregon), "Self Assembly of Designed Precursors, a General Approach to New Metastable Solids with Designed Nanoarchitecture", A2-308, 10:30-12:00, 13:00-14:30
2015/12
Prof. Kageyama will co-organize a symposium "From Pnictides to Perovskites: Impact of Local Structure in Solid State Chemistry" in Pacifichem 2015. Please join us. filebrochure
2014/12
Paper on a nematic state in BaTi2Pn2O superconductor, published in Nature Communications, a work in collaboration with Prof. Simon Billinge
2014/11
Paper on high-pressure synthesis of magnetic oxynitride, published in Angew. Chem. Int. Ed.
2014/3
Symposium "Solid State Chemistry Potpourri in Kyoto" (March 11 & 12 at A2-306, Katsura campus). fileprogram
2014/2
We will organize a symposium "From Pnictides to Perovskites: Impact of Local Structure in Solid State Chemistry" in Pacifichem 2015. Please join us.
2014/2
Prof. Kageyama wins JSPS prize
2012/4
Paper on hydride mobility in perovskite BaTiO3, published in Nature Materials. nolink
2012/2
Review paper on square-planar coordinate iron oxides, published in Chem. Soc. Rev.
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2009/7
Paper on spin-state transition transition for a four-coordinate metal, published in Nature Chemistry.
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2007/12
Paper on synthesis of SrFeO2 with a square planar coordination, published in Nature.


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