OBSERVATION OF MN-55 NMR AND NQR SIGNALS FROM SITE-II IN BETA-MN METAL

被引：40
作者：
KOHORI, Y
NOGUCHI, Y
KOHARA, T
机构：
[1] Department of Material Science, Faculty of Science, Himeji Institute of Technology, Hyogo 678-12, Ako-gun
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 02期
关键词：
MN-55; NMR; NQR; BETA-MN; T1;
D O I：
10.1143/JPSJ.62.447
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
NMR and NQR signals of Mn-55 in site II were observed. The electric quadrupole coupling constant and the asymmetry parameter were estimated to be e2qQ/h = 30 MHz and eta approximately 0, respectively. The nuclear spin lattice relaxation rate, 1/T1, is proportional to square-root T, which indicates beta Mn to be an itinerant antiferromagnetic system with T(N) approximately 0 K. The value of 1/T1 at site II is about 20 times larger than the value at site I. The electronic state of Mn at site II is more magnetic than that at site I.
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页码：447 / 450
页数：4
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