APPLIED-FIELD MOSSBAUER STUDIES OF THE IRON STORAGE PROTEINS FERRITIN AND HEMOSIDERIN

被引：9

作者：

HUNT, C

PANKHURST, QA

DICKSON, DPE

机构：

[1] Department of Physics, University of Liverpool, Liverpool

来源：

HYPERFINE INTERACTIONS | 1994年 / 91卷 / 1-4期

关键词：

D O I：

10.1007/BF02064613

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：

Applied field Mossbauer spectra obtained from ferritin and haemosiderin have been fitted using a spin-Hamiltonian model, to determine the effect of the applied field on the direction of the iron magnetic moments. The results of these fits indicate that the ordering of magnetic moments within the ferrihydrite core of these proteins is antiferromagnetic. The values of the anisotropy field obtained from these fits correspond to much higher values of the superparamagnetic blocking temperatures than those actually observed. This anomaly has implications for our understanding of the superparamagnetic relaxation processes in these materials.

引用

页码：821 / 826

页数：6

共 10 条

[1]

DICKSON DPE, 1989, HYPERFINE INTERACT, V45, P225, DOI 10.1007/BF02405882

[2] MOSSBAUER-SPECTROSCOPY, ELECTRON-MICROSCOPY AND ELECTRON-DIFFRACTION STUDIES OF THE IRON CORES IN VARIOUS HUMAN AND ANIMAL HEMOSIDERINS [J].