Zobrazeno 1 - 10 of 100 pro vyhledávání: '"J. B. Forsyth"'
1
High pressure neutron diffraction investigation of CuO
Autor: P.J. Brown, Tapan Chatterji, J B Forsyth
Publikováno v: Journal of Physics: Condensed Matter. 17:S3057-S3062
The dependence of the magnetic structure of CuO on hydrostatic pressure up to 18 kbar has been studied by means of neutron diffraction at low temperatures. The pressure dependences of both the Neel temperature TN and the incommensurate–commensurate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::810cae7fcf5c73d43ce1612f7072c6ea
https://doi.org/10.1088/0953-8984/17/40/008
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2
Magnetic moments and magnetic site susceptibilities in Mn5Si3
Autor: M. Ramos Silva, P. J. Brown, J B Forsyth
Publikováno v: Journal of Physics: Condensed Matter. 14:8707-8713
Polarized neutron diffraction has been used to determine the manganese magnetic moments aligned by magnetic fields applied parallel to the [001] axis in the antiferromagnetic phases of Mn5Si3. It has been found that in the two antiferromagnetic phase
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3452e65f569419dbbcdd5bf0ac34dea0
https://doi.org/10.1088/0953-8984/14/37/307
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3
The charge-density distribution, its multipole refinement and the antiferromagnetic structure of dioptase, Cu 6 [Si 6 O 18 ]·6H 2 O
Autor: J. B. Forsyth, P. J. Brown, E. L. Belokoneva, Yu. K. Gubina
Publikováno v: Physics and Chemistry of Minerals. 29:430-438
The chemical bonding in the ring silicate mineral dioptase is investigated on the basis of accurate single-crystal X-ray diffraction data. A multipole model is used in the refinements. Static deformation electron density is mapped for the silicon tet
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc1de2a737be9e3d151174b6e977cd22
https://doi.org/10.1007/s00269-002-0246-6
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4
Determination of the magnetization distribution in Cr2O3using spherical neutron polarimetry
Autor: F. Tasset, E Lelièvre-Berna, J B Forsyth, P.J. Brown
Publikováno v: Journal of Physics: Condensed Matter. 14:1957-1966
The magnetization distribution due to the Cr3+ ion in Cr2O3 has been determined using spherical neutron polarimetry. The magnetic structure factors of h 0 l reflections have been measured out to sin θ/λ = 0.75 A-1. The results show that the Cr3+ ma
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e4cb7b171fa6a46ef0ba2f68356b460
https://doi.org/10.1088/0953-8984/14/8/323
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5
The charge density distribution and antiferromagnetic properties of azurite Cu 3 [CO 3 ] 2 (OH) 2
Autor: Yu. K. Gubina, J. B. Forsyth, E. L. Belokoneva
Publikováno v: Physics and Chemistry of Minerals. 28:498-507
The structure and bonding in azurite are investigated on the basis of accurate single-crystal X-ray diffraction data. Both spherical IAM and pseudoatom models have been used in the refinements. The deformation electron density: dynamic (IAM) and stat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f78d6186fd85e6fe349a1e511a0d7fc
https://doi.org/10.1007/s002690100176
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6
High-energy magnetic excitations and anomalous spin-wave damping in FeGe2
Autor: C. P. Adams, Toby Perring, Christopher D. Frost, T.E. Mason, A. Z. Menshikov, T.M. Holden, J B Forsyth, Eric Fawcett
Publikováno v: Journal of Physics: Condensed Matter. 12:8487-8493
Inelastic neutron scattering has been used to measure the high-energy, low-temperature magnetic excitations of the itinerant antiferromagnet FeGe2. The spin-wave excitations follow a Heisenberg dispersion with exchange constant along the c-axis SJFM
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f19bf080d99eca2553b24dce354b48c
https://doi.org/10.1088/0953-8984/12/39/311
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8
Helimagnetic order in ferric arsenate, FeAsO4
Autor: M D Marcos, J B Forsyth, C Wilkinson, Jonathan P. Wright, J. P. Attfield
Publikováno v: Scopus-Elsevier
CIÊNCIAVITAE
High-resolution time of flight neutron powder diffractometry has been used to determine the antiferromagnetic structure of ferric arsenate at 4.2 K. The structure is incommensurate with a magnetic propagation vector (0.04994(3), 0, -0.24725(2)) in th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9366f397a9492124ecc6f750973ecbb2
https://doi.org/10.1088/0953-8984/11/6/011
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9
Structures and phase transitions of in the temperature range
Autor: J B Forsyth, Kevin S. Knight, E. L. Belokoneva, William I. F. David
Publikováno v: Journal of Physics: Condensed Matter. 10:9975-9989
High-resolution neutron powder diffractometry has been used to characterize the structural phase transitions which occur in at 550 and . The change in lattice parameters of the trigonal unit cell as a function of temperature, observed in the range fr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e78d1b1772349400d3c177120c1d9aad
https://doi.org/10.1088/0953-8984/10/44/006
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10
A study of magnetoelectric domain formation in
Autor: F. Tasset, P.J. Brown, J B Forsyth
Publikováno v: Journal of Physics: Condensed Matter. 10:663-672
The newly developed technique of zero-field neutron polarimetry has been used to determine the imbalance in the population of domains in antiferromagnetic produced by cooling through the Neel temperature under different conditions. The method allows
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0d7a95b31e5d084cbb8ac9e06cf5222
https://doi.org/10.1088/0953-8984/10/3/017
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