EXCHANGE INTERACTIONS IN MIXED YB3+-CR3+ AND YB3+-HO3+ DIMERS - AN INELASTIC-NEUTRON-SCATTERING INVESTIGATION OF CS3YB1.8CR0.2BR9 AND CS3YB1.8HO0.2BR9

被引：32

作者：

AEBERSOLD, MA

GUDEL, HU

HAUSER, A

FURRER, A

BLANK, H

KAHN, R

机构：

[1] UNIV BERN,INST ANORGAN CHEM,CH-3000 BERN 9,SWITZERLAND

[2] EIDGENOSS TH ZURICH,NEUTRONENSTREUUNG LAB,CH-5232 VILLIGEN,SWITZERLAND

[3] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

[4] CENS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.48.12723

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The two title compounds were synthesized and investigated with the inelastic-neutron-scattering (INS) technique. They contain mixed YbMBr93- (M = Cr3+, Ho3+) dimers as discrete units, and the magnetic excitations of mixed Yb3+-Cr3+ and Yb3+-Ho3+ dimers could thus be observed. The Yb3+-Cr3+ dimer has three INS transitions, for which anisotropic exchange, as well as zero-field splitting of Cr3+, has to be included in the exchange Hamiltonian. For the Yb3+-Ho3+ dimer the effect of the exchange interaction manifests itself as a broadening and a splitting of the crystal-electric-field levels of the isolated Ho3+ ion. Taking into account the full (2J + 1) ground-state multiplet of Ho3+, as well as anisotropic exchange, gives a satisfactory description of this dimer.

引用

页码：12723 / 12731

页数：9

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