The Experts below are selected from a list of 177 Experts worldwide ranked by ideXlab platform
K H J Buschow - One of the best experts on this subject based on the ideXlab platform.
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Neutron Diffraction study of CeNi5Sn
Journal of Alloys and Compounds, 1998Co-Authors: O. Moze, Winfried Kockelmann, E.h. Brück, K H J BuschowAbstract:Abstract The crystal structure of the compound CeNi 5 Sn has been studied by time-of-flight Neutron Diffraction at room temperature. The hexagonal structure of this compound was confirmed and the site occupancy of the Ni and Sn compounds was studied in more detail. The Neutron Diffraction data show that only the 2b and 2c site are exclusively occupied by Ni atoms whereas Ni shares the other non-rare earth sites with Sn.
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Magnetic properties and Neutron Diffraction of TbMn4Al8
Journal of Alloys and Compounds, 1996Co-Authors: Penelope Schobinger-papamantellos, F R De Boer, C.h. De Groot, Peter Fischer, K H J BuschowAbstract:Abstract We have studied the magnetic properties of the compound TbMn 4 Al 8 by means of Neutron Diffraction and magnetic measurements. From the magnetic measurements it is concluded that the magnetic interactions in this compound are very weak and do not lead to magnetic ordering above 4.2 K. From the Neutron Diffraction measurements it is concluded that magnetic ordering is absent even down to 1.5 K. The influence of atomic-site disorder on the magnetic properties is discussed.
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A Neutron Diffraction study of CeNi0.84Sn2
Journal of Alloys and Compounds, 1996Co-Authors: Penelope Schobinger-papamantellos, Juan Rodríguez-carvajal, K H J BuschowAbstract:Abstract The nuclear structure of a compound with nominal composition CeNiSn 2.1 , was studied by high resolution Neutron Diffraction. The refinement of the nuclear structure shows that this compound is slightly Ni deficient, the corresponding formula being CeNi 0.840(4) Sn 2.1 .
Penelope Schobinger-papamantellos - One of the best experts on this subject based on the ideXlab platform.
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Magnetic properties and Neutron Diffraction of TbMn4Al8
Journal of Alloys and Compounds, 1996Co-Authors: Penelope Schobinger-papamantellos, F R De Boer, C.h. De Groot, Peter Fischer, K H J BuschowAbstract:Abstract We have studied the magnetic properties of the compound TbMn 4 Al 8 by means of Neutron Diffraction and magnetic measurements. From the magnetic measurements it is concluded that the magnetic interactions in this compound are very weak and do not lead to magnetic ordering above 4.2 K. From the Neutron Diffraction measurements it is concluded that magnetic ordering is absent even down to 1.5 K. The influence of atomic-site disorder on the magnetic properties is discussed.
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A Neutron Diffraction study of CeNi0.84Sn2
Journal of Alloys and Compounds, 1996Co-Authors: Penelope Schobinger-papamantellos, Juan Rodríguez-carvajal, K H J BuschowAbstract:Abstract The nuclear structure of a compound with nominal composition CeNiSn 2.1 , was studied by high resolution Neutron Diffraction. The refinement of the nuclear structure shows that this compound is slightly Ni deficient, the corresponding formula being CeNi 0.840(4) Sn 2.1 .
Flora Meilleur - One of the best experts on this subject based on the ideXlab platform.
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Optimizing crystal volume for Neutron Diffraction: D-xylose isomerase.
European biophysics journal : EBJ, 2006Co-Authors: Edward H. Snell, Michael Damon, Dean A. A. Myles, Mark J. Van Der Woerd, Russell A. Judge, Flora MeilleurAbstract:Neutron Diffraction is uniquely sensitive to hydrogen positions and protonation state. In that context structural information from Neutron data is complementary to that provided through X-ray Diffraction. However, there are practical obstacles to overcome in fully exploiting the potential of Neutron Diffraction, i.e. low flux and weak scattering. Several approaches are available to overcome these obstacles and we have investigated the simplest: increasing the diffracting volume of the crystals. Volume is a quantifiable metric that is well suited for experimental design and optimization techniques. By using response surface methods we have optimized the xylose isomerase crystal volume, enabling Neutron Diffraction while we determined the crystallization parameters with a minimum of experiments. Our results suggest a systematic means of enabling Neutron Diffraction studies for a larger number of samples that require information on hydrogen position and/or protonation state.
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Optimizing Crystal Volume for Neutron Diffraction
2006Co-Authors: Edward H. Snell, Mark Vanderwoerd, Michael Damon, Russell Judge, Dean A. A. Myles, Flora MeilleurAbstract:Neutron Diffraction is uniquely sensitive to hydrogen positions and protonation state. In that context structural information from Neutron data is complementary to that provided through X-ray Diffraction. However, there are practical obstacles to overcome in fully exploiting the potential of Neutron Diffraction, Le. low flux and weak scattering. Several approaches are available to overcome these obstacles and we have investigated the simplest: increasing the diffracting volume of the crystals. Volume is a quantifiable metric that is well suited for experiment design and optimization techniques. By using response surface methods we have optimized xylose isomerase crystal volume, enabling Neutron Diffraction while we determined the crystallization parameters with the minimum of experiments. Our results suggest a systematic means of enabling Neutron Diffraction studies for a larger number of samples that require information on hydrogen position and/or protonation state.
S. K. Malik - One of the best experts on this subject based on the ideXlab platform.
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Magnetization and Neutron Diffraction studies on Sr2TiMnO6
Journal of Applied Physics, 2011Co-Authors: Jagat Lamsal, Rajib Mondal, Ashwani Kumar, K. Kamala Bharathi, P. N. Santhosh, R. Nirmala, A. K. Nigam, William B. Yelon, S. Quezado, S. K. MalikAbstract:Magnetic properties of the double perovskite oxide, Sr2TiMnO6, have been studied by means of bulk magnetization and powder Neutron Diffraction experiments. Low field magnetization data reveal transitions at ∼45 K (TC) and at ∼15 K (TN). A magnetic moment value of only ∼0.23 μB/F.U. is attained at 5 K in the 7 T field. Powder Neutron Diffraction studies suggest the possible antiferromagnetic order in this compound at 12 K with moments of ∼0.5 μB at the Mn site.
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Magnetic and Neutron Diffraction studies on PrMnSb2
Journal of Applied Physics, 2002Co-Authors: S. K. Malik, Jinbo Yang, William B. Yelon, Zili Chu, Amish G. Joshi, Qingsheng Cai, William Joseph James, Kishore KamarajuAbstract:Magnetic and Neutron Diffraction studies have been carried out on PrMnSb2. Magnetization data in the temperature range of 5–400 K show two magnetic transitions: one at ∼175 K attributed to the antiferromagnetic ordering of the Mn moments, and the other at ∼35 K possibly due to the antiferromagnetic ordering of the Pr moments. The magnetization-field isotherms at various temperatures are consistent with the above. Neutron Diffraction data obtained at various temperatures can be fitted with a nearly antiferromagnetically coupled Mn moment of ∼3μB at 70 K. At 10 K, moments both on Mn (∼3.5μB) and Pr (∼0.94μB) are ordered antiferromagnetically with small canting angles.
Robert Bau - One of the best experts on this subject based on the ideXlab platform.
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Single Crystal Neutron Diffraction Studies on Proteins
Journal of Neutron Research, 2005Co-Authors: Robert BauAbstract:This article is a short review of the results of single crystal Neutron Diffraction studies on proteins, and is meant to serve two purposes: firstly, as a brief update of new results which appeared since our last review in 2002, [Tsyba, I. and Bau, R. (2002) “Neutron Diffraction Studies on Proteins”, Chemtracts 15, 233] and secondly to focus on one particular area: cases in which Neutron Diffraction studies have helped in the understanding of the catalytic activity of enzymes.
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Structures of transition metal hydrides determined by Neutron Diffraction
Inorganica Chimica Acta, 1997Co-Authors: Robert Bau, Mary H. DrabnisAbstract:Abstract Neutron Diffraction structure determinations of transition metal hydrides have been reviewed. Molecular complexes as well as solid state compounds are surveyed; both structures determined by single-crystal and powder Neutron Diffraction are included. Tables of average MH distances have been compiled.