Hyperfine field anisotropy on iron nuclei in barium hexaferrite

被引：4
|
作者：
Stepankova, H
Englich, J
Caspary, EG
Lutgemeier, H
机构：
[1] Charles Univ Prague, Fac Math & Phys, KFNT, CR-18000 Prague 8, Czech Republic
[2] Forschungszentrum Julich, IFF, D-52425 Julich, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷
关键词：
hexagonal ferrites; hyperfine field; NMR;
D O I：
10.1016/S0304-8853(97)00268-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The NMR spectra of (57)Fe nuclei in a barium hexaferrite single crystal were measured by spin-echo technique at 4.2 K. An external magnetic field of 1.4 and 2.7 T was applied in several different directions in the hexagonal plane in order to detect the influence of the hyperfine anisotropy on the resonance line positions. The number of observed NMR lines was found to agree with our prediction, based on the site symmetry analysis. The dependences of the NMR frequencies on the magnetization direction were fitted to determine (after subtracting the dipolar field anisotropy) the hyperfine field anisotropy tensors for each iron site. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：253 / 254
页数：2
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