High Resolution TOF Neutron Powder Diffractometer with Supermirror Guide

Kamiyama, Takashi; Torii, Shuki; Oikawa, Katsunari; Itoh, Shigeyasu; Furusaka, M.; Satoh, Soya; Egami, T.; Izumi, Fujio; Asano, Hideo

doi:10.4028/www.scientific.net/msf.321-324.302

Cited by 28 publications

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“…For the neutron diffraction measurement, the wire was cut into 100 short pieces with 10 mm in length and stacked parallel into a cubic shape with 10 mm on the side. The neutron diffraction measurements were conducted at a time of flight (TOF) neutron diffractometer Sirius [9] installed at the pulsed spallation neutron facility KENS, High Energy Accelerator Research Organization, Japan. At high resolution scattering bank , diffraction patterns with many hkl peaks for can be measured simultaneously.…”

Section: Methodsmentioning

confidence: 99%

Neutron Diffraction Study on Prebending Effects for Bronze Route<tex>$rm Nb_3rm Sn$</tex>Wires Without Reinforcement

Awaji

Oguro

Nishijima

et al. 2006

IEEE Trans. Appl. Supercond.

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The critical current, upper critical field and critical temperature of bronze route Nb 3 Sn commercial wires are enhanced by applying a repeated bending strain at room temperature, i.e., "prebending strain". In order to investigate the prebending effects from a viewpoint of a residual strain, axial and lateral residual strains were evaluated directly by neutron diffraction at room temperature. We found that the axial residual strain changes from 0.10% to 0.02 % but the lateral one is unchanged by applying a prebending strain of 0.5% for an ordinary bronze route (Nb Ti) 3 Sn wires without reinforcement. Hence, in the case of the ordinary Nb 3 Sn wires without reinforcement, the prebending treatment modifies only the axial residual strain states independently to the lateral one, although it may depend on the wire structure. The critical current properties under the axial tensile strain suggest that the axial residual strain is reduced by about 0.11% but the radial residual strain unchanged by the prebending treatment of 0.5%. This is consistent with the results of the neutron diffraction.

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Section: Methodsmentioning

confidence: 99%

Neutron Diffraction Study on Prebending Effects for Bronze Route<tex>$rm Nb_3rm Sn$</tex>Wires Without Reinforcement

Awaji

Oguro

Nishijima

et al. 2006

IEEE Trans. Appl. Supercond.

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“…Time-of-flight neutron powder diffraction data were collected for BIT and (Bi 3.25 Nd 0.75 )Ti 3 O 12 using the Sirius diffractometer at KENS [4] for the liner thermal expansion coefficient, α. Structural parameters were refined by the Rietveld method using the program RIETAN-2001T [5].…”

Section: C422mentioning

confidence: 99%

Effect of Thermal Strain on Domain Fraction in a-/b-axis-oriented Epitaxial Bi₄Ti₃O₁₂ Films

et al. 2003

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a-/b-axis-oriented epitaxial Bi 4 Ti 3 O 12 and neodymium-substituted Bi 4 Ti 3 O 12 films with a different a-domain fraction, V (100) /[V (100) +V (010) ], were grown by metalorganic chemical vapor deposition above the phase transition temperature. It was demonstrated that the saturation polarization observed for the a-/b-axis-oriented film is proportional to the a-domain fraction estimated by x-ray diffraction. The liner relationship passing through the origin revealed that the 90° domain switching by an external electric field hardly occurred. The extrapolation gave spontaneous polarization of 58 µC/cm 2 for a pure a-axis-oriented (Bi 3.5 Nd 0.5 )Ti 3 O 12 film. The domain fraction was investigated as a function of thermal strain originated from a difference in thermal expansion coefficient between the film and substrates. The domain fraction of the films changed with the thermal strain along the in-plane [010] in tetragonal a-axis-oriented films as well as epitaxially grown tetragonal Pb(Zr,Ti)O 3 films.

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“…Time-of-flight (TOF) neutron powder diffraction data were collected at room temperature, 300, 500 and 800 1C using the 90-degree banks of the Sirius diffractometer [14] at the High Energy Accelerator Research Organization in Japan. The collected diffraction data in a d range of 0.5-3.0 Å were analyzed using the Rietveld method with the RIETAN-TN program for TOF neutron powder diffraction [15,16].…”

Section: Methodsmentioning

confidence: 99%

Doping effect on crystal structure and conduction property of fast oxide ion conductor LaGaO3-based perovskite

Kajitani

Matsuda

Hoshikawa

et al. 2007

Journal of Physics and Chemistry of Solids

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High Resolution TOF Neutron Powder Diffractometer with Supermirror Guide

Cited by 28 publications

References 0 publications

Neutron Diffraction Study on Prebending Effects for Bronze Route<tex>$rm Nb_3rm Sn$</tex>Wires Without Reinforcement

Neutron Diffraction Study on Prebending Effects for Bronze Route<tex>$rm Nb_3rm Sn$</tex>Wires Without Reinforcement

Effect of Thermal Strain on Domain Fraction in a-/b-axis-oriented Epitaxial Bi₄Ti₃O₁₂ Films

Doping effect on crystal structure and conduction property of fast oxide ion conductor LaGaO3-based perovskite

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High Resolution TOF Neutron Powder Diffractometer with Supermirror Guide

Cited by 28 publications

References 0 publications

Neutron Diffraction Study on Prebending Effects for Bronze Route<tex>$rm Nb_3rm Sn$</tex>Wires Without Reinforcement

Neutron Diffraction Study on Prebending Effects for Bronze Route<tex>$rm Nb_3rm Sn$</tex>Wires Without Reinforcement

Effect of Thermal Strain on Domain Fraction in a-/b-axis-oriented Epitaxial Bi4Ti3O12 Films

Doping effect on crystal structure and conduction property of fast oxide ion conductor LaGaO3-based perovskite

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Effect of Thermal Strain on Domain Fraction in a-/b-axis-oriented Epitaxial Bi₄Ti₃O₁₂ Films