EPITAXIAL GROWTH OF IRON NITRIDES BY MBE IN THE PRESENCE OF AN ATOMIC NITROGEN SOURCE

机译：存在原子氮源时MBE引起的铁氮化物的表观生长

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Despite the high mismatch of 10 % between the MgO substrate and the iron nitride phase, single-crystalline layers of γ'-Fe_4N were obtained. From precise X-ray measurements, a tetragonal distortion was found and also a tilt of about 1.2°between the nitride and the substrate planes. Possibly a periodicity in the misfit dislocation network is the cause of the observed strain. The unexpected tilt in one direction may be due to the asymmetry in the geometry during growth. Extensive Mossbauer experiments allowed determination of the easy axis of the magnetization along the <100> crystallographic direction of the γ'-Fe_4N phase. The smaller hyperfine fields obtained in the Mossbauer experiments may be correlated with the strain present in the nitride layer.

机译：尽管在MgO衬底和氮化铁相之间存在10％的高度不匹配，但仍获得了γ'-Fe_4N的单晶层。通过精确的X射线测量，发现四边形畸变，并且在氮化物和衬底平面之间也存在约1.2°的倾斜。错位错位网络中的周期性可能是观察到应变的原因。在一个方向上的意外倾斜可能是由于在生长过程中几何形状的不对称。广泛的Mossbauer实验允许确定沿着γ'-Fe_4N相的<100>晶体学方向的磁化强度易轴。在Mossbauer实验中获得的较小的超精细场可能与氮化物层中存在的应变相关。

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来源
《NATO Advanced Study Institute on Magnetic Storage Systems Beyond 2000, Jun 25-Jul 7, 2000, Rhodes, Greece》|2000年|p.445-448|共4页
会议地点 Rhodes(GR)
作者
D. M. BORSA; S. GRACHEV; D. O. BOERMA;
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作者单位

Nuclear Solid State Physics, Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands;

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原文格式 PDF
正文语种 eng
中图分类自动化技术、计算机技术;
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EPITAXIAL GROWTH OF IRON NITRIDES BY MBE IN THE PRESENCE OF AN ATOMIC NITROGEN SOURCE

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