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1

Density measurements of liquid Fe–Si alloys at high pressure using the sink–float method

Ryuji Tateyama, Eiji Ohtani, Hidenori Terasaki, Keisuke Nishida, Yuki Shibazaki, Akio Suzuki, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2011

Language:

english

File:

PDF, 403 KB

english, 2011

2

High-pressure in situ x-ray-diffraction study of the phase transformation from graphite to hexagonal diamond at room temperature

Yagi, Takehiko, Utsumi, Wataru, Yamakata, Masa-aki, Kikegawa, Takumi, Shimomura, Osamu

Journal:

Physical Review B

Year:

1992

Language:

english

File:

PDF, 519 KB

english, 1992

3

Structural analysis of a-C:H and a-C:H:Si films under high-pressure and high-temperature by synchrotron X-ray diffraction

Hirayama, Tomoko, Eguchi, Yuri, Saeki, Koichi, Matsuoka, Takashi, Kikegawa, Takumi

Journal:

Diamond and Related Materials

Year:

2016

Language:

english

File:

PDF, 3.19 MB

english, 2016

4

Phase relationships of the Fe–FeS system in conditions up to the Earth's outer core

Seiji Kamada, Hidenori Terasaki, Eiji Ohtani, Takeshi Sakai, Takumi Kikegawa, Yasuo Ohishi, Naohisa Hirao, Nagayoshi Sata, Tadashi Kondo

Journal:

Earth and Planetary Science Letters

Year:

2010

Language:

english

File:

PDF, 481 KB

english, 2010

5

HIP production of a diamond/SiC composite and application to high-pressure anvils

Osamu Ohtaka, Masaru Shimono, Naoyuki Ohnishi, Hiroshi Fukui, Hitoshi Takebe, Hiroshi Arima, Takamitsu Yamanaka, Takumi Kikegawa, Shoichi Kume

Journal:

Physics of the Earth and Planetary Interiors

Year:

2004

Language:

english

File:

PDF, 179 KB

english, 2004

6

Partitioning of potassium between iron and silicate at the core-mantle boundary

Hirao, Naohisa, Ohtani, Eiji, Kondo, Tadashi, Endo, Noriaki, Kuba, Toshiko, Suzuki, Toshiaki, Kikegawa, Takumi

Journal:

Geophysical Research Letters

Year:

2006

Language:

english

File:

PDF, 908 KB

english, 2006

7

Interaction between iron and post-perovskite at core-mantle boundary and core signature in plume source region

Sakai, Takeshi, Kondo, Tadashi, Ohtani, Eiji, Terasaki, Hidenori, Endo, Noriaki, Kuba, Toshiko, Suzuki, Toshiaki, Kikegawa, Takumi

Journal:

Geophysical Research Letters

Year:

2006

Language:

english

File:

PDF, 261 KB

english, 2006

8

Aluminous hydrous mineral δ -AlOOH as a carrier of hydrogen into the core-mantle boundary

Sano, Asami, Ohtani, Eiji, Kondo, Tadashi, Hirao, Naohisa, Sakai, Takeshi, Sata, Nagayoshi, Ohishi, Yasuo, Kikegawa, Takumi

Journal:

Geophysical Research Letters

Year:

2008

Language:

english

File:

PDF, 174 KB

english, 2008

9

Compression Behaviors of Binary Skutterudite CoP 3 in Noble Gases up to 40 GPa at Room Temperature

Niwa, Ken, Nomichi, Daisuke, Hasegawa, Masashi, Okada, Taku, Yagi, Takehiko, Kikegawa, Takumi

Journal:

Inorganic Chemistry

Year:

2011

Language:

english

File:

PDF, 841 KB

english, 2011

10

at high pressure

Kobayashi, Yuki, Endo, Shoichi, Koto, Kichiro, Kikegawa, Takumi, Shimomura, Osamu

Journal:

Physical Review B

Year:

1995

Language:

english

File:

PDF, 180 KB

english, 1995

11

Phase transition of ZnS at high pressures and temperatures

Ono, Shigeaki, Kikegawa, Takumi

Journal:

Phase Transitions

Year:

2017

Language:

english

File:

PDF, 760 KB

english, 2017

12

Phase Transitions of Alkaline-Earth-Metal Disilicides MAESi2 (MAE: Ca, Sr, and Ba) at High Pressures and High Temperatures.

Motoharu Imai, Takumi Kikegawa

Journal:

Year:

2003

Language:

english

File:

PDF, 60 KB

english, 2003

13

A topological transition of B1-KOH-T1I-B2 type AgCl under high pressure

Keiji Kusaba, Yasuhiko Syono, Takumi Kikegawa, Osamu Shimomura

Journal:

Journal of Physics and Chemistry of Solids

Year:

1995

Language:

english

File:

PDF, 619 KB

english, 1995

14

Metallization and phase transitions of the three-dimensional halogen-bridge mixed-valence complex Cs2Au2I6 under high pressure

Hiroshi Kitagawa, Hirohiko Sato, Norimichi Kojima, Takumi Kikegawa, Osamu Shimomura

Journal:

Solid State Communications

Year:

1991

Language:

english

File:

PDF, 539 KB

english, 1991

15

Phase transition of ZrRuP at high temperatures and high pressures

Ichimin Shirotani, Kenji Tachi, Nobuharu Ichihashi, Takafumi Adachi, Takumi Kikegawa, Osamu Shimomura

Journal:

Physics Letters A

Year:

1995

Language:

english

File:

PDF, 320 KB

english, 1995

16

The phase transition of CuCrZrS4 at high pressure

Yuki Nakamoto, Takahiro Matsuoka, Tomoko Kagayama, Katsuya Shimizu, Jie Tang, Nami Kobayashi, Shoichi Nagata, Takumi Kikegawa

Journal:

Physica B: Condensed Matter

Year:

2005

Language:

english

File:

PDF, 322 KB

english, 2005

17

High-pressure phase transition of hematite, Fe2O3

Shigeaki Ono, Takumi Kikegawa, Yasuo Ohishi

Journal:

Journal of Physics and Chemistry of Solids

Year:

2004

Language:

english

File:

PDF, 108 KB

english, 2004

18

High-pressure and high-temperature synthesis of a cubic IrO2 polymorph

Shigeaki Ono, Takumi Kikegawa, Yasuo Ohishi

Journal:

Physica B: Condensed Matter

Year:

2005

Language:

english

File:

PDF, 297 KB

english, 2005

19

A high-pressure and high-temperature synthesis of platinum carbide

Shigeaki Ono, Takumi Kikegawa, Yasuo Ohishi

Journal:

Solid State Communications

Year:

2005

Language:

english

File:

PDF, 165 KB

english, 2005

20

Structural property of CsCl-type sodium chloride under pressure

Shigeaki Ono, Takumi Kikegawa, Yasuo Ohishi

Journal:

Solid State Communications

Year:

2006

Language:

english

File:

PDF, 152 KB

english, 2006

21

In situ X-ray observation of phase transitions in under high pressure and high temperature

Keiji Kusaba, Takumi Kikegawa

Journal:

Solid State Communications

Year:

2008

Language:

english

File:

PDF, 363 KB

english, 2008

22

Stable phase with the type structure in under high pressure and high temperature

Keiji Kusaba, Takumi Kikegawa

Journal:

Solid State Communications

Year:

2008

Language:

english

File:

PDF, 1.26 MB

english, 2008

23

Phase transitions of Zn(OH)2 under high pressure and high temperature

Keiji Kusaba, Takumi Kikegawa

Journal:

Solid State Communications

Year:

2008

Language:

english

File:

PDF, 970 KB

english, 2008

24

Debye temperature of gold under high pressure determined by X-ray powder diffraction method

Keiji Kusaba, Takumi Kikegawa

Journal:

Solid State Communications

Year:

2009

Language:

english

File:

PDF, 822 KB

english, 2009

25

Structural analysis of simple base oils under high pressure using synchrotron radiation X-ray diffraction: First trial

Tomoko Hirayama, Kazuaki Nemoto, Susumu Hayase, Yuka Mitsunaga, Takashi Matsuoka, Takanori Hattori, Takumi Kikegawa

Journal:

Tribology International

Year:

2009

Language:

english

File:

PDF, 510 KB

english, 2009

26

High-pressure phases of V2O5:: an application of an in situ X-ray observation method to high-pressure synthesis of materials

Keiji Kusaba, Eriko Ohshima, Yasuhiko Syono, Takumi Kikegawa

Journal:

Journal of Crystal Growth

Year:

2001

Language:

english

File:

PDF, 98 KB

english, 2001

27

A new high-pressure phase of ZnSe with B9-type structure

Keiji Kusaba, Takumi Kikegawa

Journal:

Journal of Physics and Chemistry of Solids

Year:

2002

Language:

english

File:

PDF, 101 KB

english, 2002

28

STRUCTURE OF FeS UNDER HIGH PRESSURE

KEIJI KUSABA, YASUHIKO SYONO, TAKUMI KIKEGAWA, OSAMU SHIMOMURA

Journal:

Journal of Physics and Chemistry of Solids

Year:

1997

Language:

english

File:

PDF, 939 KB

english, 1997

29

Pressure-induced structural phase transition of LaCrO3

Takuya Hashimoto, Nobuyuki Matsushita, Yuichi Murakami, Norimichi Kojima, Kaori Yoshida, Hiroaki Tagawa, Masayuki Dokiya, Takumi Kikegawa

Journal:

Solid State Communications

Year:

1998

Language:

english

File:

PDF, 115 KB

english, 1998

30

X-ray study with synchrotron radiation of cerium and praseodymium monopnictides with the NaCl-type structure at high pressures

Ichimin Shirotani, Junichi Hayashi, Keigo Yamanashi, Kouji Hirano, Takafumi Adachi, Naoki Ishimatsu, Osamu Shimomura, Takumi Kikegawa

Journal:

Physica B: Condensed Matter

Year:

2003

Language:

english

File:

PDF, 174 KB

english, 2003

31

The use of sintered diamond anvils in the MA8 type high-pressure apparatus

Tadashi Kondo, Hiroshi Sawamoto, Akira Yoneda, Manabu Kato, Akihito Matsumuro, Takehiko Yagi, Takumi Kikegawa

Journal:

Pure and Applied Geophysics

Year:

1993

Language:

english

File:

PDF, 591 KB

english, 1993

32

Iron-water reaction at high pressure and temperature, and hydrogen transport into the core

Eiji Ohtani, Naohisa Hirao, Tadashi Kondo, Masayoshi Ito, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2005

Language:

english

File:

PDF, 304 KB

english, 2005

33

A new high-pressure phase of strontium carbonate

Shigeaki Ono, Miki Shirasaka, Takumi Kikegawa, Yasuo Ohishi

Journal:

Physics and Chemistry of Minerals

Year:

2005

Language:

english

File:

PDF, 307 KB

english, 2005

34

Effect of incorporation of iron and aluminum on the thermoelastic properties of magnesium silicate perovskite

Norimasa Nishiyama, Takehiko Yagi, Shigeaki Ono, Hirotada Gotou, Tatsuhiko Harada, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2007

Language:

english

File:

PDF, 393 KB

english, 2007

35

Lattice preferred orientation in CaIrO3perovskite and post-perovskite formed by plastic deformation under pressure

Ken Niwa, Takehiko Yagi, Kenya Ohgushi, Sébastien Merkel, Nobuyoshi Miyajima, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2007

Language:

english

File:

PDF, 508 KB

english, 2007

36

The stability and equation of state for the cotunnite phase of TiO2up to 70

Daisuke Nishio-Hamane, Asa Shimizu, Ritsuko Nakahira, Ken Niwa, Asami Sano-Furukawa, Taku Okada, Takehiko Yagi, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2010

Language:

english

File:

PDF, 359 KB

english, 2010

37

Melting of iron–silicon alloy up to the core–mantle boundary pressure: implications to the thermal structure of the Earth’s core

Hidetoshi Asanuma, Eiji Ohtani, Takeshi Sakai, Hidenori Terasaki, Seiji Kamada, Tadashi Kondo, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2010

Language:

english

File:

PDF, 431 KB

english, 2010

38

Pressure and temperature dependence of the viscosity of a NaAlSi2O6melt

Akio Suzuki, Eiji Ohtani, Hidenori Terasaki, Keisuke Nishida, Hiromi Hayashi, Tatsuya Sakamaki, Yuki Shibazaki, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2011

Language:

english

File:

PDF, 291 KB

english, 2011

39

In situ observation of a garnet/perovskite transition in CaGeO3

Shigeaki Ono, Takumi Kikegawa, Yuji Higo

Journal:

Physics and Chemistry of Minerals

Year:

2011

Language:

english

File:

PDF, 1.87 MB

english, 2011

40

Reaction of forsterite with hydrogen molecules at high pressure and temperature

Ayako Shinozaki, Hisako Hirai, Hiroyuki Kagi, Tadashi Kondo, Taku Okada, Daisuke Nishio-Hamane, Shin-ichi Machida, Tetsuo Irifune, Takumi Kikegawa, Takehiko Yagi

Journal:

Physics and Chemistry of Minerals

Year:

2012

Language:

english

File:

PDF, 390 KB

english, 2012

41

Measurement of diffusion process of iron atoms under high pressure of hydrogen by time-domain analysis of nuclear resonant scattering of X-rays

Hidetaka Kasai, Taizo Kawauchi, Yuh Fukai, Xiao-Wei Zhang, Shunji Kishimoto, Takumi Kikegawa, Eiji Ohtani, Tatsuo Okano

Journal:

Applied Surface Science

Year:

2009

Language:

english

File:

PDF, 250 KB

english, 2009

42

Methane hydrate, amoeba or a sponge made of water molecules

Hisako Hirai, Masashi Hasegawa, Takehiko Yagi, Yoshitaka Yamamoto, Kazushige Nagashima, Mami Sakashita, Katsutosi Aoki, Takumi Kikegawa

Journal:

Chemical Physics Letters

Year:

2000

Language:

english

File:

PDF, 463 KB

english, 2000

43

High pressure and temperature behavior of FeS

Keiji Kusaba, Yasuhiko Syono, Takumi Kikegawa, Osamu Shimomura

Journal:

Journal of Physics and Chemistry of Solids

Year:

1998

Language:

english

File:

PDF, 588 KB

english, 1998

44

Phase Relations and Volume Changes of Hafnia under High Pressure and High Temperature

Osamu Ohtaka, Hiroshi Fukui, Taichi Kunisada, Tomoyuki Fujisawa, Kenichi Funakoshi, Wataru Utsumi, Tetsuo Irifune, Koji Kuroda, Takumi Kikegawa

Journal:

Journal of the American Ceramic Society

Year:

2001

Language:

english

File:

PDF, 108 KB

english, 2001

45

Metastable garnet in oceanic crust at the top of the lower mantle

Kubo, Tomoaki, Ohtani, Eiji, Kondo, Tadashi, Kato, Takumi, Toma, Motomasa, Hosoya, Tomofumi, Sano, Asami, Kikegawa, Takumi, Nagase, Toshiro

Journal:

Year:

2002

Language:

english

File:

PDF, 263 KB

english, 2002

46

Plagioclase breakdown as an indicator for shock conditions of meteorites

Kubo, Tomoaki, Kimura, Makoto, Kato, Takumi, Nishi, Masayuki, Tominaga, Aiko, Kikegawa, Takumi, Funakoshi, Ken-ichi

Journal:

Nature Geoscience

Year:

2009

Language:

english

File:

PDF, 633 KB

english, 2009

47

Measurements of x‐ray diffraction for liquid metals under high pressure

Tsuji, Kazuhiko, Yaoita, Kenichi, Imai, Motoharu, Shimomura, Osamu, Kikegawa, Takumi

Journal:

Review of Scientific Instruments

Year:

1989

Language:

english

File:

PDF, 667 KB

english, 1989

48

High pressure studies at the photon factory

Kikegawa, Takumi

Journal:

High Pressure Research

Year:

1992

Language:

english

File:

PDF, 475 KB

english, 1992

49

Pressure-Induced Rhombohedral-Simple Cubic Structural Phase Transition in As

Kikegawa, Takumi, Iwasaki, Hiroshi

Journal:

Journal of the Physical Society of Japan

Year:

1987

File:

PDF, 403 KB

1987

50

Compression behaviors of distorted rutile-type hydrous phases, MOOH (M

Asami Sano-Furukawa, Takehiko Yagi, Taku Okada, Hirotada Gotou, Takumi Kikegawa

Journal:

Physics and Chemistry of Minerals

Year:

2012

Language:

english

File:

PDF, 476 KB

english, 2012