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タイトル :Multiple-wavelength neutron holography with pulsed neutrons
著者 :Hayashi, Koiuichi
Ohoyama, Kenji
Happo, Naohisa
Matsushita, Tomohiro
Hosokawa, Shinya
Harada, Masahide
Inamura, Yasuhiro
Nitani, Hiroaki
Shishido, Toetsu
Yubuta, Kunio
刊行年月日 :2017-8-18
収録雑誌名 :Science Advances
巻 :3
号 :8
開始ページ :e1700294
要約(Abstract) :Local structures around impurities in solids provide important information for understanding the mechanisms of material functions, because most of them are controlled by dopants. For this purpose, the x-ray absorption fine structure method, which provides radial distribution functions around specific elements, is most widely used. However, a similar method using neutron techniques has not yet been developed. If one can establish a method of local structural analysis with neutrons, then a new frontier of materials science can be explored owing to the specific nature of neutron scattering - that is, its high sensitivity to light elements and magnetic moments. Multiple-wavelength neutron holography using the time-of-flight technique with pulsed neutrons has great potential to realize this. We demonstrated multiple-wavelength neutron holography using a Eu-doped CaF2 single crystal and obtained a clear three-dimensional atomic image around trivalent Eu substituted for divalent Ca, revealing an interesting feature of the local structure that allows it to maintain charge neutrality. The new holography technique is expected to provide new information on local structures using the neutron technique.
URL :http://advances.sciencemag.org/content/3/8/e1700294
収録種別 :雑誌掲載論文
ISSN :2375-2548
出版社(者) :American Association for the Advancement of Science
権利(Rights) :© 2017 American Association for the Advancement of Science
URI :http://hdl.handle.net/2298/37981
このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/2298/37981