238U Mossbauer study on the 5f-quadrupoles in uranium-based intermetallics

被引：2
|
作者：
Tsutsui, S [1 ]
Nakada, M
Nasu, S
Honma, T
Tokiwa, Y
Aoki, D
Wisniewski, P
Haga, Y
Onuki, Y
机构：
[1] Japan Synchrotron Radiat Res Inst, Mikazuki, Hyogo 6795198, Japan
[2] Japan Atom Energy Res Inst, Dept Mat Sci, Tokai, Ibaraki 3191195, Japan
[3] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan
[4] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan
[5] Japan Atom Energy Res Inst, Adv Ctr Res Ctr, Ibaraki 3191195, Japan
来源：
HYPERFINE INTERACTIONS | 2002年 / 141卷 / 1-4期
关键词：
D O I：
10.1023/A:1021281315015
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：
We have determined the distribution of the 5f-quadrupoles and detected the 5f-quadrupole order in the uranium intermetallics, uranium dipnictides and UPd3, with U-238 Mossbauer spectroscopy. We have declared that the distribution of the 5f-qaudrupoles depends on the magnetic sequence in uranium dipnictides. The distribution of the 5f-quadrupole is spherical in UBi2, while those are oblate within c-plane in UP2, UAs2 and USb2. We have observed the sudden drop of the recoil-free fraction above the transition temperature of the quadrupole order in UPd3. The present result suggests the change of the phonon states due to the quadrupole order in this compound.
引用
收藏
页码：237 / 242
页数：6
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