Reduced magnetic hyperfine field at the surface of α-Fe2O3 and FeBO3 single crystals

被引：1
|
作者：
Stahl, B
Gellert, R
MÜller, M
Kankeleit, E
Kamzin, A
机构：
[1] Tech Univ Darmstadt, Fachgebiet Dunne Schichten, Fachbereich Mat Wissensch, D-64287 Darmstadt, Germany
[2] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
[3] AF Joffe Inst, St Petersburg, Russia
来源：
HYPERFINE INTERACTIONS | 2000年 / 126卷 / 1-4期
关键词：
D O I：
10.1023/A:1012666527793
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The surface magnetic ordering of an alpha-(Fe2O3)-Fe-57 and (FeBO3)-Fe-57 single crystal was studied by Depth Selective Conversion Electron Mossbauer Spectroscopy (DCEMS). The depth selective Mossbauer data of (FeBO3)-Fe-57 up to the Neel temperature (T-N=348.35 K) reveal the coexistence of the canted antiferromagnetic bulk phase and a magnetic surface phase that shows time relaxation. Both phases are separated by a wall (interim layer) and the thickness of the magnetic surface layer increases as the crystal is heated to T-N.
引用
收藏
页码：371 / 376
页数：6
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