Energy dependence of the ATS reflections of iron pyrite, FeS2, near the Fe K-Absorption edge

被引：18

作者：

Kokubun, J ^{[1
]}

Nagano, T ^{[1
]}

Kuribayashi, M ^{[1
]}

Ishida, K ^{[1
]}

机构：

[1] Sci Univ Tokyo, Fac Sci & Technol, Dept Phys, Noda, Chiba 2788510, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1998年 / 67卷 / 09期

关键词：

forbidden reflection; absorption edge; anomalous scattering; ATS reflection; quadrupole transition; pyrite crystal; FeS2;

D O I：

10.1143/JPSJ.67.3114

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The "forbidden reflection" intensity excited due to the ATS (anisotropy of tensor of susceptibility) in a FeS2 (pyrite) crystal was measured for X-ray energy near the Fe K-absorption edge from 15 eV below the edge to 65 eV above the edge. In the region above the edge, the ATS intensities for (001), (003) and (011) reflections showed essentially the same energy dependence, two sharp peaks and one broad peak. But below the edge, the energy spectra of the ATS intensity depend on the reflection plane. The azimuthal angle dependence of the intensity cannot be explained by the calculation based on only the dipole transition. Therefore, the scattering is affected by quadrupole transition.

引用

页码：3114 / 3118

页数：5

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