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Journal Articles

Investigation of the phonon dispersion associated with superlattice reflections in the BiS$$_{2}$$-based superconductor LaBiS$$_{2}$$O$$_{0.5}$$F$$_{0.5}$$

Tamatsukuri, Hiromu; Hasegawa, Takumi*; Sagayama, Hajime*; Mizumaki, Masaichiro*; Murakami, Yoichi*; Kajitani, Joe*; Higashinaka, Ryuji*; Matsuda, Tatsuma*; Aoki, Yuji*; Tsutsui, Satoshi*

Physical Review B, 107(2), p.024303_1 - 024303_8, 2023/01

 Times Cited Count:0 Percentile:0(Materials Science, Multidisciplinary)

Journal Articles

Broken C$$_{4}$$ symmetry in the tetragonal state of uniaxial strained BaCo$$_{0.9}$$Ni$$_{0.1}$$S$$_{1.9}$$

Shamoto, Shinichi; Yamauchi, Hiroki; Ikeuchi, Kazuhiko*; Kajimoto, Ryoichi; Ieda, Junichi

Physical Review Research (Internet), 3(1), p.013169_1 - 013169_9, 2021/02

Journal Articles

Observation of Si(111)-$$sqrt{3}$$$$times$$$$sqrt{3}$$-Ag surface at room temperature by reflection high-energy positron diffraction

Fukaya, Yuki; Kawasuso, Atsuo; Hayashi, Kazuhiko; Ichimiya, Ayahiko

Applied Surface Science, 244(1-4), p.166 - 169, 2005/05

 Times Cited Count:5 Percentile:26.14(Chemistry, Physical)

no abstracts in English

Journal Articles

Collective Josephson vortex dynamics interacting with transverse Josephson plasma modes in intrinsic Josephson junctions

Machida, Masahiko; Koyama, Tomio*; Tachiki, Masashi*

Physica B; Condensed Matter, 284-288(Part1), p.608 - 609, 2000/07

 Times Cited Count:0 Percentile:0(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Phase diagram of the new superconductor Sr$$_{2}$$CuO$$_{2}$$(CO$$_{3}$$)$$_{1-x}$$(BO$$_{3}$$)$$_{x}$$

*; *; Yokoo, Tetsuya*; *; Akimitsu, Jun*; Katano, Susumu

Physica C, 263(1-4), p.344 - 348, 1996/00

 Times Cited Count:1 Percentile:9.38(Physics, Applied)

no abstracts in English

Journal Articles

Correlation between superconductivity, electronic state and crystal structure in La$$_{2-y-x}$$Bi$$_{y}$$Ba$$_{x}$$CuO$$_{4}$$

*; *; Katano, Susumu; *; *; *; *

Physica C, 263(1-4), p.298 - 301, 1996/00

 Times Cited Count:4 Percentile:29.13(Physics, Applied)

no abstracts in English

Journal Articles

A Neutron diffraction study of Y$$_{1-x}$$Ca$$_{x}$$Ba$$_{2}$$Cu$$_{4}$$O$$_{8}$$

*; *; Morii, Yukio

Physica B; Condensed Matter, 213&214, p.87 - 89, 1995/00

 Times Cited Count:2 Percentile:18.64(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Phase transitions and superconductivity of Sr-substituted La$$_{2-x}$$Ba$$_{x}$$CuO$$_{4}$$(x=0.125)

Katano, Susumu; Ueda, Yutaka*; *; Mori, Nobuo*

Physica B; Condensed Matter, 213-214, p.81 - 83, 1995/00

 Times Cited Count:2 Percentile:18.64(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Structural phase transition of Sr$$_{2}$$CuO$$_{2}$$(CO$$_{3}$$)

*; Akimitsu, Jun*; Katano, Susumu; *; *

Physica C, 255, p.157 - 166, 1995/00

 Times Cited Count:10 Percentile:55.1(Physics, Applied)

no abstracts in English

Journal Articles

Effect of pressure on T$$_{c}$$ in La$$_{2-x}$$Ba$$_{x}$$CuO$$_{4}$$ with x=0.125

Mori, Nobuo*; *; *; *; Ueda, Yutaka*; *; Katano, Susumu

J. Supercond., 7(5), p.819 - 821, 1994/10

no abstracts in English

Journal Articles

Structural phase transitions and superconductivity of La$$_{2-x}$$Ba$$_{x}$$CuO$$_{4}$$ with x=0.125; Effects of pressure and Sr-substitution

Katano, Susumu; Mori, Nobuo*; Ueda, Yutaka*; Fernandez-Baca, J. A.*; Funahashi, Satoru

Physica C, 235-240, p.837 - 838, 1994/00

 Times Cited Count:0 Percentile:0.01(Physics, Applied)

no abstracts in English

Journal Articles

Incommensurate-commensurate phase transition in Rb$$_{2}$$ZnBr$$_{4}$$

;

Journal of the Physical Society of Japan, 52(7), p.2526 - 2533, 1983/00

 Times Cited Count:42 Percentile:89.22(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Lattice dynamics commensurate and incommensurate K$$_{2}$$SeO$$_{4}$$

J.D.Axe*; ; G.Shirane*

Physical Review B, 22(7), p.3408 - 3413, 1980/00

 Times Cited Count:58 Percentile:90.81(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Incommensurate structural phase transition and phason.

Kotai Butsuri, 12(7-8), p.390 - 398, 1977/08

no abstracts in English

Journal Articles

Phase transition in SnTe with low carrier concentration

; ; *; *

Journal of the Physical Society of Japan, 38(2), p.443 - 449, 1975/02

 Times Cited Count:139

no abstracts in English

Oral presentation

Local structure analysis of PbTiO$$_3$$ in high-temperature cubic phase

Yoneda, Yasuhiro; Taniguchi, Hiroki*; Kitanaka, Yuki*; Noguchi, Yuji*

no journal, , 

Lead titanate, PbTiO$$_3$$, has a tetragonal structure having a large c/a ratio at room temperature. A phase transition to the paraelectric phase at 490$$^{circ}$$C, structural changes to cubic. However, just above the transition point to the paraelectric phase, the phonon modes of the still ferroelectric is observed. Therefore, spontaneous polarization using a sample of reversible high quality, perform high-energy X-ray diffraction experiments were subjected to structural analysis in a wide temperature range from room temperature to 800$$^{circ}$$C. Short range order structure analysis and atomic two pairs distribution function (atomic pair-distribution function, PDF) was performed using. A comparison local structures at room temperature of the observed local structure and relaxor Pb (Mg$$_{1/3}$$Nb$$_{2/3}$$)O$$_3$$ (PMN) with 800$$^{circ}$$C of PbTiO$$_3$$, network structure similar to the relaxor PMN is present in the high temperature phase of PbTiO$$_3$$ It is considered to have.

Oral presentation

Local structure analysis of high-quality Bi$$_{0.5}$$Na$$_{0.5}$$TiO$$_3$$

Yoneda, Yasuhiro; Noguchi, Yuji*

no journal, , 

Since bismuth sodium titanate (Bi$$_{0.5}$$Na$$_{0.5}$$TiO$$_3$$, BNT) exhibits relatively large piezoelectric properties, many studies have been conducted as lead-free piezoelectric materials. Since it is a highly volatile substance containing bismuth and sodium, it was difficult to obtain a chemically correct BNT due to these defects generated during firing. Recent improvements in the synthetic method have made it possible to obtain BNT with a chemical composition, so structural analysis was performed again using high-quality BNT. As a result of local structural analysis, it was found that bismuth atoms shift from the average structural position in the high-temperature region, causing a structural phase transition. (to be published) The diffuse scattering component has a weaker intensity than the Bragg reflection, but we have devised a method to evaluate whether analysis level data is obtained, and we plan to report this as well.

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