ELECTRIC-FIELD GRADIENT IN CUBIC INTERMETALLIC EUROPIUM COMPOUNDS WITH UNSTABLE EUROPIUM VALENCE

被引：3

作者：

KROPP, H

DORMANN, E

BUSCHOW, KHJ

机构：

[1] UNIV BAYREUTH,INST PHYS,D-8580 BAYREUTH,FED REP GER

[2] PHILIPS RES LABS,EINDHOVEN,NETHERLANDS

来源：

SOLID STATE COMMUNICATIONS | 1979年 / 32卷 / 07期

关键词：

D O I：

10.1016/0038-1098(79)90363-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Spin echo NMR measurements in EuPd2 and EuPt2 are reported. The europium hyperfine fields were determined and found to be equal to Bhf = + (2.08 ± 0.04) T in EuPd2 and Bhf = -(3.33 ± 0.02) T in EuPt2. The Eu153 resonance lines show well resolved quadrupolar structures with a line separation of 0.7 MHz in EuPd2 and 1.4 MHz in EuPt2. Analysis of the NMR results obtained in the isoelectronic pseudobinary series EuxCa1-xPd2, EuxBa1-xPd2, EuxCa1-xPt2 and Eu0.95Ba0.05Pt2 suggests that the observed quadrupolar interaction is partially related to a not completely divalent character of Eu in these compounds. This is in keeping with thermodynamic arguments given earlier by Miedema. © 1979.

引用

页码：507 / 510

页数：4

共 12 条

[1] ELECTRON NUCLEAR DOUBLE RESONANCE OF DIVALENT EUROPIUM ION [J].