SOFT-X-RAY MAGNETIC CIRCULAR-DICHROISM IN MOLECULAR-BASED MAGNETS

被引：4

作者：

ARRIO, MA

SAINCTAVIT, P

MOULIN, CCD

BROUDER, C

DEGROOT, FMF

MALLAH, T

VERDAGUER, M

机构：

[1] UNIV PARIS 07,F-75252 PARIS 05,FRANCE

[2] LAB UTILISAT RAYONNEMENT ELECTROMAGNET,MEN,CEA,CNRS,F-91405 ORSAY,FRANCE

[3] LAB PHYS SOLIDE NANCY,CNRS,URA 155,F-54506 VANDOEUVRE NANCY,FRANCE

[4] UNIV PARIS 06,CHIM MET TRANSIT LAB,CNRS,URA 419,F-75252 PARIS 05,FRANCE

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1995年 / 97卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(95)00405-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The molecular based magnet Cs-I[(NiCrIII)-Cr-II(CN)(6)]. 2H(2)O is a ferromagnet with a Curie temperature T-c = 90 K. Its structure consists of face centered cubic lattice of Ni-II ions connected by Cr(CN)(6) entities. We have recorded X-ray Magnetic Circular Dichroism (XMCD) at the L(2,3) edges of Ni-II. It clearly evidences that nickel II is in a high spin configuration and ferromagnetically coupled to the surrounding Cr-III. Through Crystal Field Multiplet calculation we have determined the total magnetic moment carried by the Ni-II. By using sum rules derived for XMCD, it has been possible to extract the orbital and spin contributions to the total magnetic moment. A somewhat too small magnetic moment is found on nickel. A complete calculation taking into account the multiplet coupling effect and the covalent hybridization allowed to determine the precise ground state of nickel and showed that hybridization with surrounding nitrogen atoms is not responsible for the experimental low nickel magnetic moment.

引用

页码：453 / 456

页数：4

共 14 条

[1]

ARRIO MA, IN PRESS

[2] X-RAY CIRCULAR-DICHROISM AND LOCAL MAGNETIC-FIELDS [J].