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Matsuoka T, Fujihisa H, Hirao N, Ohishi Y, Mitsui T, Masuda R, Seto M, Yoda Y, Shimizu K, Machida A, Aoki K. Erratum: Structural and Valence Changes of Europium Hydride Induced by Application of High-Pressure H_{2} [Phys. Rev. Lett. 107, 025501 (2011)]. Phys Rev Lett 2019; 122:179901. [PMID: 31107077 DOI: 10.1103/physrevlett.122.179901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Indexed: 06/09/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.107.025501.
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Takemura K, Fujihisa H. Pressure-induced phase transitions in Na–Au intermetallic compounds. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311097625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Matsuoka T, Fujihisa H, Hirao N, Ohishi Y, Mitsui T, Masuda R, Seto M, Yoda Y, Shimizu K, Machida A, Aoki K. Structural and valence changes of europium hydride induced by application of high-pressure H₂. Phys Rev Lett 2011; 107:025501. [PMID: 21797616 DOI: 10.1103/physrevlett.107.025501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Indexed: 05/31/2023]
Abstract
Europium hydride EuH(x), when exposed to high-pressure H₂, has been found to exhibit the following structural and valence changes: Pnma(x = 2, divalent) → P6₃/mmc(x = 2, 7.2-8.7 GPa) → I4/m(x > 2, 8.7-9.7 GPa) → I4/mmm(x > 2, 9.7 GPa-,trivalent). With a trivalent character and a distorted cubic fcc structure, the I4/mmm structure is the β phase commonly observed for other rare-earth metal hydrides. Our study clearly demonstrates that EuH(x) is no longer an irregular member of the rare-earth metal hydrides.
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Affiliation(s)
- T Matsuoka
- Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8, Hyogo 679-5198, Japan.
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Abstract
Near ambient pressures, molecular diffusion dominates protonic diffusion in ice. Theoretical studies have predicted that protonic diffusion will dominate at high pressures in ice. We measured the protonic diffusion coefficient for the highest temperature molecular phase of ice VII at 400 kelvin over its entire stable pressure region. The values ranged from 10(-17) to 10(-15) square meters per second at pressures of 10 to 63 gigapascals. The diffusion coefficients extrapolated to high temperatures close to the ice VII melting curve were less by a factor of 10(2) to 10(3) than a superionic criterion of approximately 10(-8) square meters per second, at which protons would diffuse freely.
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Affiliation(s)
- Eriko Katoh
- National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, Tsukuba 305-8565, Ibaraki, Japan
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Hirai H, Uchihara Y, Fujihisa H, Sakashita M, Katoh E, Aoki K, Nagashima K, Yamamoto Y, Yagi T. High-pressure structures of methane hydrate observed up to 8 GPa at room temperature. J Chem Phys 2001. [DOI: 10.1063/1.1403690] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ohwada K, Fujii Y, Takesue N, Isobe M, Ueda Y, Nakao H, Wakabayashi Y, Murakami Y, Ito K, Amemiya Y, Fujihisa H, Aoki K, Shobu T, Noda Y, Ikeda N. "Devil's staircase"-type phase transition in NaV2O5 under high pressure. Phys Rev Lett 2001; 87:086402. [PMID: 11497967 DOI: 10.1103/physrevlett.87.086402] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2001] [Indexed: 05/23/2023]
Abstract
The "devil's staircase"-type phase transition in the quarter-filled spin-ladder compound NaV2O5 has been discovered at low temperature and high pressure by synchrotron radiation x-ray diffraction. A large number of transitions are found to successively take place among higher-order commensurate phases with 2a x 2b x zc type superstructures. The observed temperature and pressure dependence of modulation wave number q(c), defined by 1/z, is well reproduced by the axial next nearest neighbor Ising model. The q(c) is suggested to reflect atomic displacements presumably coupled with charge ordering in this system.
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Affiliation(s)
- K Ohwada
- Neutron Scattering Laboratory, Institute for Solid States Physics, The University of Tokyo, 106-1 Shirakata, Tokai, 319-1106, Japan
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Sakashita M, Fujihisa H, Yamawaki H, Aoki K. Molecular Dissociation in Deuterium Sulfide under High Pressure: Infrared and Raman Study. J Phys Chem A 2000. [DOI: 10.1021/jp001625m] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mami Sakashita
- National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305-8565, Japan and CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan
| | - H. Fujihisa
- National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305-8565, Japan and CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan
| | - H. Yamawaki
- National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305-8565, Japan and CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan
| | - K. Aoki
- National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305-8565, Japan and CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan
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Aoki K, Yamawaki H, Sakashita M, Fujihisa H. Infrared absorption study of the hydrogen-bond symmetrization in ice to 110 GPa. Phys Rev B Condens Matter 1996; 54:15673-15677. [PMID: 9985631 DOI: 10.1103/physrevb.54.15673] [Citation(s) in RCA: 154] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Aoki K, Yamawaki H, Sakashita M, Fujihisa H. X-ray diffraction study of pressure-induced polymerization in simple molecules with triple bonds. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396078300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Fujihisa H, Aoki K, Yamawaki H, Sakashita M. Intensity analysis for high-pressure powder diffraction using diamond anvil cells. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396077781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Fujihisa H, Takemura K. Stability and the equation of state of alpha -manganese under ultrahigh pressure. Phys Rev B Condens Matter 1995; 52:13257-13260. [PMID: 9980515 DOI: 10.1103/physrevb.52.13257] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fujii Y, Hase K, Ohishi Y, Fujihisa H, Hamaya N, Takemura K, Shimomura O, Kikegawa T, Amemiya Y, Matsushita T. Evidence for molecular dissociation in bromine near 80 GPa. Phys Rev Lett 1989; 63:536-539. [PMID: 10041100 DOI: 10.1103/physrevlett.63.536] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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