期刊
NEW JOURNAL OF PHYSICS
卷 11, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/11/5/055001
关键词
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资金
- Natural Science Foundation of China
- Ministry of Science and Technology of China [2006CB601001]
- National Basic Research Program of China [2006CB922005]
- US DOE [DE-FG02-07ER45384]
- NSF [DMR-0454672]
The magnetic structure of BaFe2As2 was determined from polycrystalline neutron diffraction measurements soon after the ThCr2Si2-type FeAs-based superconductors were discovered. Both the moment direction and the in-plane antiferromagnetic wavevector are along the longer a-axis of the orthorhombic unit cell. There is only one combined magnetostructural transition at similar to 140 K. However, a later single-crystal neutron diffraction work reported contradicting results. Here, we show neutron diffraction results from a single-crystal sample, grown by a self-flux method, that support the original polycrystalline work.
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