RELAXATION EFFECTS IN MOSSBAUER-SPECTRA OF BRIDGED 7-COORDINATE FE-3+ PAIRS

被引：3

作者：

MCCANN, VH ^{[1
]}

WARD, JB ^{[1
]}

MCKEE, V ^{[1
]}

FAULALO, K ^{[1
]}

JONES, DH ^{[1
]}

机构：

[1] UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,ENGLAND

来源：

HYPERFINE INTERACTIONS | 1990年 / 56卷 / 1-4期

关键词：

D O I：

10.1007/BF02405459

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 compound [Fe2L(H2O)4] (ClO4)4.H2O which contains pairs of Fe3+ ions within a binucleating macrocycle derived from Schiff base condensation of 2,6-diacetylpyridine and 1,3-diamino-2-hydroxy-propane has been studied by magnetic susceptibility measurements and57Fe Mössbauer spectroscopy between 4.2 K and 300 K, and its crystal structure determined. The spectra show relaxation effects at all temperatures. Spectra taken at 4.2 K in applied fields of about 3 T showed that Vzz is positive and η∼0. The spectra were fitted using a stochastic model of a magnetic hyperfine field relaxing parallel to the z axis, giving relaxation times of 10-9-10-10 s. © 1990 J.C. Baltzer A.G. Scientific Publishing Company.

引用

页码：1465 / 1470

页数：6