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18 October (Thu)

A paper ”Atomic imaging of iron-based superconductor parent FeTe using x-ray fluorescence holography” is published in Journal of Physics: Condensed Matter 30, 455101-1-10 (2018). An inelastic x-ray scattering experiment is carried out on liquid Ba8Ga16Sn30 clathrate compounds by Professor Inui of Hiroshima University and coworkers to investigate phonon dynamics in this liquid.


17 October (Wed)

We visit Dr. P. Korecki of Jagiellonian University at Kraków, Poland, and discuss the data analysis of x-ray fluorescence holography.


11 October (Thu)

A Japanese review paper ” Progress of Three-Dimensional Atomic Image Investigations by X-Ray Fluorescence Holography” is accepted to publish in Vacuum and Surface Science. Recent progress of x-ray fluorescence holography is reviewed.


7 October (Sun)

SH helps Prof. Inui’s inelastic x-ray scattering experiments at BL35XU of SPring-8 on 4-7 of October.


25 September (Tue)

A paper ”Atomic imaging of iron-based superconductor parent FeTe using x-ray fluorescence holography” is accepted to publish in Journal of Physics: Condensed Matter. An inelastic x-ray scattering experiment is carried out on liquid Ba8Ga16Sn30 clathrate compounds by Professor Inui of Hiroshima University and coworkers to investigate phonon dynamics in this liquid.


21 September (Fri)

An oral presentation is carried out on “Partial structures of the traditional bulk metallic glass Pd40Ni40P20” at 7th International Conference on Reverse Monte Carlo Modeling (20-22 September 2018, Budapest)


19 September (Wed)

An oral presentation is carried out on “Local and intermediate‐range atomic orders in a Ga‐Ge‐Se glass by anomalous x‐ray scattering” at 13th International Conference on Solid State Chemistry (16-21 September 2018, Pardibice).


11 September (Tue)

Two oral presentations were carried out on ‘A structural study of a rejuvenation effect in an amorphous Gd-Co alloy by anomalous x-ray scattering‘ and ‘Local and intermediate-range atomic orders in a Ga-Ge-Se glass by anomalous x-ray scattering‘ at the 2018 Fall Meeting of Physical Society of Japan held at Doshisha University  on 9-12 of September.


10 September (Mon)

An oral presentations was carried out on ‘Atomic configurations and positional fluctuations in decagonal phase Al75Ni10Co15 quasicrystal by x-ray fluorescence holography‘ at the 2018 Fall Meeting of Physical Society of Japan held at Doshisha University  on 9-12 of September.


6 September (Thu)

A paper ”Atomic imaging of iron-based superconductor parent FeTe using x-ray fluorescence holography” is accepted to publish in Physica Status Solidi B. Local structures of FeTe superconductor parent alloy are investigated using x-ray fluorescence holography by Benedict of University of Marburg.


4 September (Tue)

A poster presentations was carried out on ‘Elemental identification of neighboring atoms by x-ray fluorescence holography using an anomalous atomic form factor‘ at The 14th Biennial Conference on High-Resolution X-Ray Diffraction and Imaging held at Bari on 3-7 of September.


1 September (Sat)

A paper ”In-plane positional correlations among dopants in 10H type long period stacking ordered Mg75Zn10Y15 alloy studied by X-ray fluorescence holography” is accepted to publish in Materialia. Cluster structures of Mg75Zn10Y15 alloys were investigated using x-ray fluorescence holography by Dr. K. Kimura of Nagoya Institute of Technology.


29 August (Wed)

SH visit Prof. W.-C. Pilgrim of University of Marburg in Germany, and received a signed certificate of the inter-university scientific and students exchange agreements.


21 August (Tue)

An inverse-photoemission experiment was carried out on Mg LPSO alloys on 18-21 of August at HiSOR in Hiroshima University. Jens and Mr. Kobayashi and Mr. Sano of Niigata University join the experiment.


17 August (Fri)

Anomalous x-ray scattering experiments were carried out at The Kyushu Synchrotron Light Research Center on 15-17 of August in Tosu. Jens joined this experiment.


15 August (Wed)

A paper ”Application of x-ray fluorescence holography to the analysis of the interior and surface of an yttrium oxide thin film” is accepted to publish in Surface and Interface Analysis. Holograms with difference valences in a Y oxide thin film are analyzed by Jens.


13 August (Mon)

A paper ”Anomalous x-ray scattering experiments for disordered materials at the SAGA Light Source” is accepted to publish in AIP Conference Proceedings. Details of anomalous x-ray scattering method at Saga Light Source are introduced by Jens.


8 August (Wed)

Professor Stefan Scheel of Institute of Physics, University of Rostock, which a Scientific and Student Exchange Agreement was concluded with our university, comes and makes a presentation.


4 August (Sat)

A collaboration is carried out with Prof. Yubuta of Institute for Materials Research, Tohoku University in Sendai from 2nd to 4th of August.


1 August (Wed)

A paper ”Local structural analysis of In-doped Bi2Se3 topological Insulator using x-ray fluorescence holography” is accepted to publish in Surface and Interface Analysis. Local structures of In-dioped Bi2Se3 are investigated using x-ray fluorescence holography by Dr. Kimura of Nagoya Institute of Technology.


A poster presentation were carried out on ‘Local structural studies of functional chalcogenide glasses by anomalous x-ray scattering’ at the 12th Results Briefing at Kyushu Synchrotron Light Research Center held at Saga on 1 of August.


23 July (Mon)

An x-ray fluorescence holography experiment is carried out at the bemline BL39XU of SPring-8 from 20th to 23rd of July. A cryostat (See photo) is for the first time used for the measurement, which was bought with a financial support by JSPS last fiscal year.


12 July (Thu)

A paper ”Temperature dependent local atomic structures in the traditional Fe65Ni35 Invar alloy by x-ray fluorescence holography” is published in Surface and Interface Analysis 50, 790-794 (2018). Temperature dependence of atomic structures in a Fe-Ni Invar alloy is observed by fluorescence x-ray holography.


An oral presentation is carried out on “Local- and intermediate-range structures of room-temperature superionic Ag-GeSe3 glasses” at 15th International Conference on the Physics of Non-Crystalline Solids & 14th European Society of Glass Conference held at St. Malo in France on 9-13 of July.


10 July (Tue)

An oral presentation is carried out on “Phonon excitations in an anisotropic metaphosphate glass” at 15th International Conference on the Physics of Non-Crystalline Solids & 14th European Society of Glass Conference held at St. Malo in France on 9-13 of July.


5 July (Thu)

A paper ” Local structure of FeSe0.4Te0.6 by low‐temperature x‐ray fluorescence holography” is published online in Physica Stutus Solidi B. Local structures of FeSe0.4Te0.6 around the Fe atoms are investigated using x-ray fluorescence holography by Jens.


A paper ”Electronic structures and heterogeneity of Zr-Cu-Ag metallic glasses” is published in Journal of Non-Crystalline Solids 498, 281-287 (2018). Electronic structures in Zr-Cu-Ag glasses are investigated using photoemission spectroscopy at HiSOR.


An invited talk was carried out on “A structural study of a rejuvenation effect in amorphous Gd-Co metal by anomalous x-ray scattering” at 25th International Symposium on Metastable, Amorphous, and Nanostructured Materials held at Rome on 2-6 of July.


29 June (Fri)

A proposal of Grant-in-Aid for Challenging Research (Pioneering) is approved.


28 June (Thu)

Anomalous x-ray scattering experiments were carried out on 27-28 of June at The Kyushu Synchrotron Light Research Center in Tosu. Jens and Benedict (University of Marburg) joined.


A paper ”Electronic structures and heterogeneity of Zr-Cu-Ag metallic glasses” is accepted to publish in Journal of Non-Crystalline Solids. Electronic structures in Zr-Cu-Ag glasses are investigated using photoemission spectroscopy at HiSOR.


22 June (Fri)

A paper ”Viscoelastic anomaly accompanying anti-crossing behaviour in liquid As2Se3” is published in Journal of Physics: Condensed Matter 30, 28LT02 (2018). An inelastic x-ray scattering experiment is carried out on liquid As2Se3 by Professor Inui of Hiroshima University and coworkers to investigate a behavior of viscoelastic phonons in this liquid.


16 June (Sat)

Scientific discussion is made with Professor Wakihara of the University of Tokyo.


15 June (Fri)

A paper ”The seeds of Zn6Y8 L12-type clusters in amorphous Mg85Zn6Y9 alloy investigated by photoemission spectroscopy” is  published in Journal of Alloys and Compounds 764, 431-436 (2018). Electronic structures in amorphous Mg alloys are investigated using photoemission spectroscopy at HiSOR, and it is found that the seeds of the impurity clusters are present even in the amorphous phase.


14 June (Thu)

A paper ”Seeds of L12 clusters in amorphous Mg85Zn6Y9 alloy observed via anomalous x-ray scattering” is accepted to publish in Applied Physics Express 11, 071402 (2018). Atomic structures in amorphous Mg alloys are investigated using anomalous x-ray scattering at ESRF, and it is found that the seeds of the impurity clusters are present even in the amorphous phase.


13 June (Wed)

A poster presentation of “Anomalous X-ray Scattering Experiments for Disordered Materials at the SAGA Light Source” is performed by Jens in The 13th International Conference on Synchrotron Radiation Instrumentation held at Taipei on 10-15 of June, which is awarded as the Poster Award.


12 June (Tue)

A fluorescence x-ray holography experiment was carried out with Jens at BL12B2 Taiwan beamline of the SPring-8 from 6th to 12th of June.


6 June (Fri)

A presentation of “A structural study of a rejuvenation effect in amorphous Gd-Co metal by anomalous x-ray scattering” is accepted as an invited talk in 25th International Symposium on Metastable, Amorphous, and Nanostructured Materials held at Rome on 2-6 of July.


5 June (Tue)

A paper ”Viscoelastic anomaly accompanying anti-crossing behaviour in liquid As2Se3” is accepted to publish in Journal of Physics: Condensed Matter. An inelastic x-ray scattering experiment is carried out on liquid As2Se3 by Professor Inui of Hiroshima University and coworkers to investigate a behavior of viscoelastic phonons in this liquid.


4 June (Mon)

SH discussed with Prof. Yagi of Nagoya University where SH is a guest professor.


3 June (Son)

A SPRUC meeting ‘1st meeting on spin and electron densities in momentum space’ is held at University of Tsukuba, Tokyo campus.


2 June (Sat)

An invited talk is carried out on ‘The determination of neighboring element by x-ray fluorescence holography using anomalous dispersion effect‘ at the SPRUC Meeting “Evolution and Deepening in Studies of Structure and Properties for Non-Periodic Materials” held at Nagoya Institute of Technology.


A paper ”The seeds of Zn6Y8 L12-type clusters in amorphous Mg85Zn6Y9 alloy investigated by photoemission spectroscopy” is accepted to publish in Journal of Alloys and Compounds. Electronic structures in amorphous Mg alloys are investigated using photoemission spectroscopy at HiSOR, and it is found that the seeds of the impurity clusters are present even in the amorphous phase.


31 May (Thu)

A paper ”Applications of a L1-regularized linear regression to x-ray fluorescence holography data of functional materials” is accepted to publish in Physica Status Solidi B. The excellent data analysis of x-ray fluorescence holography using a sparse modeling is reviewed.


29 May (Tue)

A paper ”Seeds of L12 clusters in amorphous Mg85Zn6Y9 alloy observed via anomalous x-ray scattering” is accepted to publish in Applied Physics Express. Atomic structures in amorphous Mg alloys are investigated using anomalous x-ray scattering at ESRF, and it is found that the seeds of the impurity clusters are present even in the amorphous phase.


28 May (Mon)

A paper ”Electronic structures and impurity cluster features in Mg-Zn-Y alloys with a synchronized long-period stacking ordered phase” is published in Journal of Alloys and Compounds 762, 797-805 (2018). Electronic structures of Mg alloys are investigated using photoemission spectroscopy at HiSOR, and it is found that the Y element is heterogeneous having three chemical sites.


27 May (Sun)

Serial number paper of Kumamoto University is pasted on our cryostat at SPring-8.


25 May (Fri)

A Photoemission experiment was carried out on Mg LPSO alloys on 22-25 of May at HiSOR in Hiroshima University. Jens and Mr. Kobayashi of Niigata University join the experiment.


17 May (Thu)

A fluorescence x-ray holography experiment was carried out at  BL6C in the PF-KEK. SH joins from 11-14, and Jens from 13-17.


15 May (Tue)

A paper ”Peculiar atomic dynamics in liquid GeTe with asymmetrical bonding: Observation by inelastic x-ray scattering” is  published in Physical Review B 97, 174203-1-10 (2018). An inelastic x-ray scattering experiment is carried out on liquid GeTe by Professor Inui of Hiroshima University and coworkers to investigate an asymmetrical bond in this liquid.


14 May (Mon)

A paper ”Electronic structures and impurity cluster features in Mg-Zn-Y alloys with a synchronized long-period stacking ordered phase” is accepted to publish in Journal of Alloys and Compounds.

Electronic structures of Mg alloys are investigated using photoemission spectroscopy at HiSOR, and it is found that the Y element is heterogeneous having three chemical sites.


A paper ”Structure determination of a new molecular white-light source” is accepted to publish in Physica Status Solidi B.

Benjamin of University of Marburg investigates the structure of amorphous (PhSn)4S6 (Ph: Phenyl) by x-ray scattering experiment and reverse Monte Carlo calculation.


10 May (Thu)

Anomalous x-ray scattering experiments are carried out on 9-10 of May at The Kyushu Synchrotron Light Research Center in Tosu. Undergraduate students, Mr. Nishii and Mr. Kuroki, and Jens join this experiment.


9 May (Wed)

A contribution of “A structural study of a rejuvenation effect in amorphous Gd-Co metal by anomalous x-ray scattering” is accepted as an oral presentation in 25th International Symposium on Metastable, Amorphous, and Nanostructured Materials held at Rome on 2-6 of July.


30 April (Mon)

A paper ”Peculiar atomic dynamics in liquid GeTe with asymmetrical bonding: Observation by inelastic x-ray scattering” is accepted to publish in Physical Review B. An inelastic x-ray scattering experiment is carried out on liquid GeTe by Professor Inui of Hiroshima University and coworkers to investigate an asymmetrical bond in this liquid.


A contribution of “Local and intermediate-range atomic orders in a Ga-Ge-Se glass by anomalous x-ray scattering” is accepted as an oral presentation in 13th International Conference on Solid State Chemistry held at Pardubice in Czech Republic on 16-21 of September.


23 April (Mon)

An anomalous x-ray scattering experiment was carried out at BL13XU of SPring-8 on 21-23 of April. The sample was provided by Prof. Hayakawa of Nagoya Institute of Technology.


20 April (Fri)

A paper ”Temperature dependent local atomic structures in the traditional Fe65Ni35 Invar alloy by x-ray fluorescence holography” is accepted to publish in Surface and Interface Analysis. Temperature dependence of atomic structures in a Fe-Ni Invar alloy is observed by fluorescence x-ray holography.


A paper ”Improvement of graphite crystal analyzer for light elements on x-ray fluorescence holography measurement” is published in Japanese Journal of Applied Physics 57, 058006 (2018). Professor Happo of Hiroshima City University shows the development of the holography apparatus for light elements.


10 April (Tue)

A paper ”Principle and reconstruction algorithm for atomic-resolution holography” is published in Journal of the Physical Society of Japan 87, 061002 (2018). Dr. Matsushita of JASRI reviews the principle of the atomic resolution holography and the algorithm of image reconstruction.


31 March (Sat)

A symposium on Deepening and development of data driven science is held by JSPS Grant-in-Aid for Scientific Research on Innovative Areas “Sparse Modeling” at Koshiba Hall in The University of Tokyo.


28 March (Wed)

Anomalous x-ray scattering experiments were carried out on 27-28 of March at The Kyushu Synchrotron Light Research Center in Tosu.


24 March (Sat)

A symposium on ‘Evolution and Deepening in Studies of Structure and Properties for Non-Periodic Materials - Application to Materials Developments by Interdisciplinary Research‘ is organized at the 73th Annual Meeting of Physical Society of Japan held at Tokyo University of Science on 22-25 of March.


23 March (Fri)

An oral presentation was carried out on ‘Phonon dynamics of liquid Au by inelastic x-ray scattering‘ at the 73th Anual Meeting of Physical Society of Japan held at Tokyo University of Science on 22-25 of March.


20 March (Tue)

An oral presentation was carried out on ‘Observation of the seeds of Zn6Y8 L12-type clusters in amorphous Mg85Zn6Y9 alloy by photoemission spectroscopy‘ at the 162th Annual Spring Meeting of the The Japan Institute of Metals and Materials held at Chiba Institute of Technology on 19-21 of March.


19 March (Mon)

A poster presentation was carried out by Yamamoto san’s group of Utsunomiya University on ‘Room temperature annealing effect for local structure around Ni in Al0.3CrFeCoNi high entropy alloy‘ at The 162th Annual Spring Meeting of the The Japan Institute of Metals and Materials held at Chiba Institute of Technology on 19-21 of March. This presentation was awarded as 30th An Excellent Poster Presentation.


10 March (Sat)

Two poster presentation were carried out on ‘An x-ray fluorescence holographic study for the determination of the Impurity site in Mn-doped Bi2Te3’ and ‘Local structure of a Nd dopant in LaF3 by x-ray fluorescence holography’ at 7th Meeting of results briefing on the JSPS Grant-in-Aid on Innovative Areas “3D Active-Site Science” held at Hiroshima City University on 10-11 of March.


8 March (Thu)

Two poster presentation were carried out on ‘Electronic structures and impurity cluster features in Mg-Zn-Y alloys with a synchronized long-period stacking ordered phase’ and ‘The seeds of Zn6Y8 L12-type clusters in amorphous Mg85Zn6Y9 alloy investigated by photoemission spectroscopy’ at The 22nd Hiroshima International Symposium on Synchrotron Radiation held at Hiroshima University on 8-9 of March.


4 March (Sun)

A poster presentation was carried out on ‘An x-ray fluorescence holographic study for the determination of the Impurity site in Mn-doped Bi2Te3’ at Quantum Beam Science Festa 2017 held at Ibaraki Prefectural Inhabitant of a Prefecture Culture Center on 2nd-4th of March.


3 March (Sat)

Both of two contributions of “Phonon excitations in an anisotropic metaphosphate glass” and ”Local- and intermediate-range structures of room-temperature superionic Ag-GeSe3 glasses” are accepted as oral presentations in The 15th International Conference on the Physics of Non-Crystalline Solids held at St. Malo in France on 9-13 of July.


1 March (Thu)

The deadline of the Physica Status Solidi (b) paper concerning the 5th International Synposiumu on Kumamoto Synchrotron Radiation (ISKSR5) is extended to 31st of March.


28 February (Wed)

Neutron holography experiments ended at the beamline BL10  (NOBORU) of MLF in the J-PARC in Tokai.


27 February (Tue)

A collaboration is carried out with Prof. Kato of Institute for Materials Research, Tohoku University in Sendai.


A paper ”Improvement of graphite crystal analyzer for light elements on x-ray fluorescence holography measurement” is accepted in Japanese Journal of Applied Physics for the publication. Professor Happo of Hiroshima City University shows the development of the holography apparatus for light elements.


22 February (Thu)

Neutron holography experiments are started at the beamline BL10  (NOBORU) of MLF in the J-PARC in Tokai.


20 February (Tue)

SH participates MEXT-JST Element Strategy Joint Symposium ~ Advancement and Future of Element Strategy ~ held at JP Tower Hall near Tokyo Station.


A fluorescence x-ray holography experiment was carried out at  the beamline BL6C in the PF-KEK. SH joins from 17-20, and Jens from 14-19. We discussed with Prof. Happo of Hiroshima City Univ., Prof. Hayashi of Nagoya Inst. Tech., and Profs. Iwasa and Ohoyama of Ibaraki Univ.


13 February (Tue)

Mr. Akaboshi of 4th grade student presents “Local structure analysis FeSe0.4Te0.6 high-temperature superconductor” at the Bachelor's Defense meeting.


12 February (Mon)

A paper ”Principle and reconstruction algorithm for atomic-resolution holography” is accepted in Journal of the Physical Society of Japan for the publication. Dr. Matsushita of JASRI reviews the principle of the atomic resolution holography and the algorithm of image reconstruction.


5 February (Mon)

A poster ”An inelastic x-ray scattering study on the origin of the strengthen mechanism for a Mg-based LPSO phase“ is presented  at the 3rd Element Strategy Initiative: To Form Core Research Centers Symposium on the Elements Strategy Large-scale Research Facilities held on 5-6th of February at Ito Hall, the University of Tokyo.


4 February (Son)

A fluorescence x-ray holography experiment was carried out with Jens at BL12B2 Taiwan beamline in the SPring-8 from 1st to 4th of February.


31 January (Wed)

A total lunar eclipse occur at about 10 pm for about one hour.


29 January (Mon)

A paper Phonon excitations in a single crystal Mg85Zn6Y9 with a synchronized long-period stacking ordered phase is published in Acta Materialia 146, 273-279 (2018). The impurity effect in the elastic properties of Mg alloy was sturdied by inelastic x-ray scattering experiment.


22 January (Mon)

Neutron scattering experiments are carried out at BL21 (NOVA) of

Materials and Life Science Experimental Facility (MLF) in J-PARC at Tokai, Ibaragi.


20 January (Sat)

A paper Distinguishing the local environments of Ga and Ge in amorphous (Ga2Se3)0.25(GeSe2)0.75 by anomalous X-ray scattering is published in Chalcogenide Letters 15, 1-6 (2018). Local structures of a Ga-Ge-Se glass were investigated by anomalous x-ray scattering at ESRF, which was presented at 8th International Conferece on Amorphous and Nano-Structures Chalcogenides by Benjamin of University of Marburg.


19 January (Fri)

On the paper published in Acta Materialia, “From the observation of the atomic vibrations in KUMADAI Magnesium, the origin of their stiffness is found - The important guideline for new structural materials -” is press released from Kumamoto University.


14 January (Sun)

A paper “Lattice distortions in TlInSe2 thermoelectric material studied by x-ray absorption fine structure” is published in Physica Status Solidi A 215(1), 1700416-1-8 (2018). This paper was studied  on a commensurate-incommensurate transition in TlInSe2 thermoelectric material by an XAFS experiment.


10 January (Wed)

A poster presentation was carried out on ‘Atomic structural characterization on the rejuvenation effect in Gd65Co35 metallic glass by anomalous x-ray scattering’ at 31th Annual Meeting of the Japanese Society for Synchrotron Radiation Research held at Tsukuba International Congress Center on 8th-10th of January.


8 January (Mon)

Two oral presentations were carried out on ‘Determination of impurity sites in Mn-doped Bi2Te3 topological insulator by x-ray fluorescence holography’ by SH and ‘Atomic configurations and positional fluctuations in decagonal phase Al75Ni10Co15 quasicrystal by x-ray fluorescence holography‘ by Jens at 31th Annual Meeting of the Japanese Society for Synchrotron Radiation Research held at Tsukuba International Congress Center on 8th-10th of January.



 

Shinya HOSOKAWA

Kumamoto University

Faculty of Advanced Science and Technology

Department of Physics Professor

2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, JAPAN


Faculty of Science, Building 3, RoomD114


Tel./Fax. 096-342-3353 


E-mail: shhosokawa (at) kumamoto-

u.ac.jp

We participate an Innovative area of Grant-in-Aids

3D Active site science

Dr. P. Korecki at Jagiellonian University